SECTION IV. (continued 3)

The barks of the Mora excelsa, Benth; Courida (Avicenna nutida), cashew (Anicardium occidentale), guava and hog-plum (Spondius lutea, Linn.), have all been successfully used for tanning in Demerara and the West India Islands, where they are very abundant. Specimens were sent from British Guiana.

The root of the Palmetto palm (Chaemaerops Palmetto) is stated to be valuable for the purposes of tanning. The leaves of Nerium Oleander contain tannic acid. The bark of a species of Malphigia is much used by the Brazilians.

The panke (Gunnera scabra) is a fine plant, growing in Chili, on the sandstone cliffs, which somewhat resembles the rhubarb on a gigantic scale. The inhabitants eat the stalks, which are subacid, tan leather with the roots, and also prepare a black dye from them. The leaf is nearly circular, but deeply indented on its margin. Mr. Darwin measured one which was nearly eight feet in diameter, and therefore no less than twenty-four in circumference. The stalk is rather more than a yard high, and each plant sends out four or five of these enormous leaves, presenting together a very noble appearance.

The barks replete with the tanning principle should be stripped with hatchets and bills from the trunk and branches of trees in spring, when their sap flows most freely. The average quantity of oak bark obtained from our forests is estimated at 150,000 tons annually, of which Ireland and Scotland furnish but a very small quantity.

The following table, given by Dr. Ure, shows the quantity of extractive matter and tannin yielded by different substances:—

In 480 partsIn 100 parts

by Davy.by Cadet.

Sicilian sumach78—

Malaga ditto79—

Souchong tea48—

Green tea41—

Bombay catechu261—

Bengal ditto231—

Nutgalls12746

Bark of pomegranate—32

Bark of Virginian sumach—10

Bark of Carolina sumach—5

Catechu and Gambier are very valuable for tanning, and are alluded to under the heads GAMBIER and ARECA PALM.

CATECHU is obtained from the Acacia Catechu, an arboreous tree growing from fifteen to twenty feet high, with a brown and scabrous bark. The interior wood is brown, dark red or blackish, and the exterior white, one or two inches thick. It inhabits various parts of the East Indies, of which it is a native, and is also now common in Jamaica. It bears whitish or pale yellow flowers.

The catechu obtained from this tree in Pegu, is celebrated throughout India, and fetches £4 to £5 more per ton than gambier and other astringent extracts. When of good quality, catechu is more powerful as an astringent than kino. Of all the astringent substances we know, catechu appears to contain the largest proportion of tannin, and Mr. Purkis found that one pound was equivalent to seven or eight of oak bark for tanning leather.

The term catechu, observes Dr. Pereira, is applied to various astringent extracts imported from India and the neighbouring countries. A few years ago the terms catechu, terra japonica, and cutch were employed synonymously; they are now, however, for the most part used in trade somewhat distinctively, though not uniformly in the same sense. The manufacture of catechu from the Acacia catechu as practised in Canara and Behar, has been described by Mr. Kerr ("Med. Obs. and Inquiries," vol. v.), and Dr. Hamilton ("Journey through Mysore," &c., vol. iii.), while Professor Royle has explained the process followed in Northern India. According to the last-mentioned gentleman, "the kutt manufacturers move to different parts of the country in different seasons, erect temporary huts in the jungles, and selecting trees fit for their purpose, cut the inner wood into small chips. These they put into small earthen pots, which are arranged in a double row, along a fireplace built of mud; water is then poured in until the whole are covered; after a considerable portion has boiled away, the clear liquor is strained into one of the neighbouring pots, and a fresh supply of the material is put into the first, and the operation repeated until the extract in the general receiver is of sufficient consistence to be poured into clay moulds, which, in the Kheree Pass and Doon, where I have seen the process, are generally of a quadrangular form. This catechu is usually of a pale red color, and is considered there to be of the best quality. By the manufacturers it is conveyed to Saharunpore and Moradabad, whence it follows the course of commerce down the Ganges, and meets that from Nepaul, so that both may be exported from Calcutta."

GAMBIER.

The Gambier plant (Uncaria Gambler, Roxburgh, Nauclea Gambir, Hunter), has been described by Rumphius under the name of Funis uncatus. It is a stout, scandent, evergreen shrub, which strongly resembles the myrtle. It is generally cultivated in the same plantation with pepper, as the leaves and shoots, after undergoing the process by which their juice is extracted, to furnish a kind of catechu, are found to be an excellent manure for the pepper vines. The leaves and young shoots of the gambier plant are collected as soon as they have attained a sufficient size, and boiled in iron pans until the juice acquires the consistence of treacle. The decoction is poured out into narrow troughs, dried, and afterwards cut up into small cakes, and packed in baskets for exportation. The gambier extract, which is of a yellowish brown color, and has the consistence of hard cheese, is much esteemed by the Malays for mixing with the preparation of betel, which they are in the habit of chewing; and considerable quantities have lately been imported to this country, where it is used for dyeing colors, and for tanning leather. The demand for gambier here is on the increase; and when better known to our chemists, it will probably be found applicable to many other purposes than those to which it is at present applied.

There were, in 1850, 400 gambier and pepper plantations on the island of Singapore; each measures or occupies on an average an area of 500 fathoms square, and employs eight to ten hands to cultivate and manufacture the gambier and pepper. There are some pepper plantations in addition, and they have been found to answer very well without any gambier being cultivated with them. Gambier cultivation is generally a losing undertaking, but it is adopted to obtain the refuse of the leaves for manuring the pepper vines, and also to employ the people in the plantations; it besides affords the proprietors the means of getting monthly sums to carry on the cultivation of pepper, which affords two crops yearly. There were formerly 600 plantations in Singapore, but the reason already assigned, and the formation of spice plantations contiguous have caused the abandonment of all those near the town. Each plantation must have an equal extent of forest land to that cultivated with gambier and pepper, to enable the manufacture of the gambier being carried on, and each gambier plantation, of 500 fathoms square, contains about 3,500 pepper vines, which yield on an average two catties per vine, or 70 piculs of pepper, and about 170 piculs of gambier annually;—a good plantation will, however, yield sometimes as much as 120 piculs of pepper, and 200 piculs of gambier, and a bad one as little as 40 to 50 piculs of pepper, and 60 to 80 piculs of gambier. Were it not for the enormous commission charged by the agents of these plantations, from whom the cultivators get all the advances, it would prove a profitable cultivation. The rates of commission charged generally are as follows:—Per picul of gambier, fifteen to twenty-five cents; per picul of pepper, thirty to forty cents; and if the price of the former is below one-and-a-half dollars, and the latter below three-and-a-half dollars per picul, a small reduction is made in the rates of commission. On every picul of rice supplied to the planters twenty to twenty-five cents commission is charged; this includes the interest of money advanced, which is never charged. A gambier and pepper plantation is valued or estimated at about 400 dollars on an average. The following is supposed to be a correct estimate, on an average, of the yearly expenditure and returns of a gambier and pepper plantation of 500 fathoms square, viz:—

EXPENDITURE.

drs.c.men.drs.c.

Eight men at 3½ dollars and 7 Java rupees per month, wages for headman and labourers respectively2270.. 12 ..272.40

Five piculs of rice, including commission, say650.. 12 ..8160

Fish, &c.500.. 12 ..6000

Boat or cart hire to carry rice and produce175.. 12 ..2100

43500

PRODUCE.

170 piculs of gambier, valued at l dollar 45 cents per picul, less 15 cents commission chargeable, nett22130——

70 piculs of pepper, at 4½ dollars, less 40 cents per picul commission, nett2870050800

Yearly profit, 73 dollars, or about £15.

Several gambier and pepper plantations have been abandoned in Singapore, partly from the ground being impoverished, but more particularly from the exhaustion of the forest adjacent to their estates. The exhaustion of the trees by yearly consumption deprives the planters of the necessary fire wood which is used for the boiling down of the gambier. A gambier plantation gets exhausted in fifteen years, either from the want of firewood or the land getting impoverished.

There are about 200 plantations at Johore, and the produce of gambier for the season of 1851 was calculated at 30,000 piculs.

This shrub was, at one period, cultivated with success at Pinang and other places to the eastward, but as Java was the principal market for the produce, and the Dutch had levied a duty of twelve Java rupees per picul on it, the cultivation at the former island did not repay its cost, and it was accordingly abandoned. Prices have been lately advancing, and the Chinese are talking of trying it again. The plant is partial to hilly land or slopes at the skirts of hills. Two hundred plants are usually placed on one orlong of land, being six feet asunder. They are raised from seed, and are topped to eight or ten feet, when the gambier is to be prepared. The Chinese dry the seed slightly, and sow in rainy weather.

The seeds vegetate in forty days, and are planted out in the second or third month afterwards.

At the expiration of fourteen months, the first cutting of the branches, with the leaves on, is made. These are put into a boiler, and when the juice has been extracted, the branches and refuse are thrown away, and the boiling is continued until the liquor has obtained the proper consistence, when it is put into shallow troughs, dried, and cut into slices for sale. The second cutting takes place eight months subsequently to the first. The plant now grows strong and admits of frequent cropping, and it will endure for twenty years. No manure is used, but the plantation is kept clean.

Estimated cost of cultivating ten orlongs, about 13 acres, according to Colonel Low:—

Spanish dollars.

Value of cleared land, ten orlongs200

Six laborers per annum360

Quit rent7

Boilers, firewood, and implements20

Houses50

Incidental30

Total first year667

Second year397

1,064

The six laborers on the plantation will, after the above period, be constantly employed in cutting and preparing the gambier: the average product will be 15 piculs monthly, which, at two dollars per picul, will be 30 dollars monthly, or 360 dollars per annum. This is the account obtained by collating different Chinese statements.

The Nauclea Gambir is placed by Jussieu under the natural order Rubiaceæ; it is a shrub attaining the height of six to eight feet, branchy; the leaves are ovate, pointed, smooth, waving, distinctly veined transversely underneath, of dark green color, and, when chewed, they have a bitter astringent taste, leaving however, afterwards, a sweetish taste in the mouth, not unlike liquorice; the flowers are aggregate, globular, composed of numerous florets, crowded on a globular naked receptacle; tubes of the corolla of a pinkish color; the upper part of the corolla fine, cleft, and of a greenish yellow color; the staminæ are five in number, and short; the pistil is longer than the corolla; the flowers are destitute of fragrance; the capsules (as correctly stated by Mr. Hunter) are stalked oblong, incrusted, and crowned with a calyx; tapering to a point below; two celled, two valved, the valves adhering at the apex, splitting at the sides; seeds very numerous, oblong, very small, compressed, furnished at both ends with a membraneous pappus.

The gambier plant is propagated either by seeds or cuttings, but the latter are preferred. It is cultivated to some extent at Singapore, but it is said that the gambier can be imported cheaper from the islands in the vicinity, more especially at the Dutch settlement at Rhio. The extract is used extensively by the natives of India, Eastern Archipelago, Cochin-China, and Cambodia, as a masticatory, wrapped up with the betel.

There are three different qualities of extract; the first and best is white, brittle, and has an earthy appearance when rubbed between the fingers (which earthy appearance gave it the name of Terra Japonica, being supposed, at first also, to come from Japan), and is formed into very small round cakes. This is the dearest sort, and most refined, but it is not unfrequently adulterated with sago; this kind is brought in the greatest quantity from the island of Sumatra. The second quality is of a brownish yellow color, is formed into oblong cakes, and, when broken, has a light brown earthy appearance; it is also made into a solid cube form; it is sold in the bazars in small packets, each containing five or six. The third quality contains more impurities than the preceding, is formed into small circular cakes, and is sold in packages of five or six in the bazar.

The method employed in preparing the extract is thus correctly related by Finlayson:—"The leaves are collected three or four times a year; they are thrown into a large cauldron, the bottom of which is formed of iron, the upper part of bark, and boiled for five or six hours, until a strong decoction is obtained; the leaves are then withdrawn, and allowed to strain over the vessel, which is kept boiling for as many hours more, until the decoction is inspissated; it is then allowed to cool, when the catechu subsides, The water is drawn off; a soft soapy substance remains, which is cut into large masses; these are further divided by a knife into small cubes, about an inch square, or into still smaller pieces, which are laid in frames to dry. This catechu has more of a granular, uniform appearance than that of Bengal; it is, perhaps, also less pure."

The younger leaves of the shrub are said to produce the whitest and best gambier; the older, a brown and inferior sort. There are other species of Nauclea indigenous to Singapore, but they do not produce any extract.

Dr. Bennett has particularised four qualities of gambier:—

1. Small round cakes, about the size of a small lozenge. Color pale, purplish, yellowish, white.

2. Cubes, in which shape it is principally imported into England, and square prisms, or oblong pieces.

3. Circular discs, or short cylindrical pieces.

4. Cubical amylaceous pieces, of a darker brown than the other kinds.

Gambier is one of the most powerful of the pure astringents.

The chief places of manufacture are Saik, Malacca, Singapore, and Rhio or Bintang. Bennett, in his "Wanderings," says there are 60,000 plantations of gambier on this island. After that of Rhio, the next best gambier is that of Lingin. That used by the Malays, with the leaves of betel, in the same manner as cutch in other parts of India, is the finest and whitest; the red being stronger tasted and rank, is exported to Batavia, China, and England, for the purposes of tanning and dyeing. It is frequently adulterated with sago powder, but it may be detected by solution in water.

Large quantities of gambier are imported, under the corrupted name of cutch, into Calcutta, from Pegu. The quantity of gambier produced in Rhio, by the Chinese settlers, amounts to about 4,600 tons a year, about 2,000 of which are exported for the consumption of Java, the rest being sent to Cochin-China and other neighbouring countries.

Two methods of obtaining gambier are described. One consists in boiling the leaves in water, and in inspissating the decoction; the other, which yields the best gambier, consists in infusing the leaves in warm water, by which a fecula is obtained, which is inspissated by the heat of the sun, and formed into cakes.

The injudicious practice adopted by the Land Office in Singapore, of granting indiscriminate licenses, or "cutting papers" as they are formed, seems open to objection, and is driving many of the Chinese cultivators to the neighbouring island of Johore, where they readily obtain permission to cultivate, without obstruction, this important article of commerce. Parties of 300 or 400 at a time left in 1846. It appears that, under his permissive license, the squatter obtains permission to clear as much land as he possibly can, but the order does not define any extent beyond which no cutting should take place. The squatter clears as much land as the means at his disposal will allow, in the hope and expectation that the jungle contiguous to the cleared ground will be at his command for fuel—a supply of fuel, easy of access, and adequate to the number of plants grown, being indispensable to the culture and manufacture of gambier. When the time for gathering the leaves arrives, another squatter (perhaps from motives of envy or malice) obtains a "cutting paper," and commences clearing in close proximity to the already-formed gambier plantation; obviously depriving the owner of the fuel he has reasonably calculated upon. The established planter cannot of course eject the intruder from the land, since the latter possesses an equal right to it, in virtue of his "cutting paper," which, as it specifies no limits, leaves him the disposer or destroyer of the crop of the industrious planter. Instead of the present system, a better practice ought to be introduced, defining the boundaries to be included in a "cutting paper," and effectually preventing a trespass on the fuel-land of the industrious planter. This might easily be effected by specifying the number of acres, as well as the direction, in every clearing paper granted.

The average produce of gambier in Singapore is between 7,000 and 8,000 piculs monthly. The ordinary price is about 1¼ dollars per picul. A deficiency of rain, labor, or other causes, will occasionally reduce the annual produce from 90,000 or 100,000 piculs, to 60,000 or 70,000, and this diminished supply will raise the market price of the article probably 35 cents per picul. But, in addition to the effect occasioned by a deficient supply, there are other causes in operation exercising a powerful influence in reducing prices. Gambier was first exported in 1830, from Singapore, to the extent of 2,587 piculs, at 4½ dollars per picul. As a rival to bark it failed at so costly a price to meet with encouragement; the culture and manufacture consequently declined until 1834, when 1,858 piculs were shipped to England at a somewhat lower rate. The demand then became active, the exportations were at first multiplied, then doubled every succeeding year, until they reached, in 1846-47 no less than 173,117 piculs. The price has gradually declined to 1¼ dollars per picul, at which rate it displaces its rival, bark. This price, however, is unremunerative to the grower, so that, unless more encouragement offers, the supply will decline.

The number of Chinese employed in the cultivation, &c., of gambier and pepper in Singapore is about 11,000. Their rate of wages fluctuates with the price of gambier. If a picul of gambier realizes 1½ dollars, the monthly pay will be about three dollars; if gambier fetches two dollars, their pay will amount to four dollars in the month. The workmen who clean the plantation always receive a dollar less than those who cut and boil the gambier.

A good deal of gambier seems now to be grown in Java, for 58,305 piculs were exported from that island in 1843. A small quantity is taken by the Chinese ports, but whether as a masticatory or for tanning and dyeing I am not aware.

VALUE OF THE TERRA JAPONICA IMPORTED INTO CEYLON.

£

1840611

18411,053

1842768

1843471

18441,153

1845537

1846824

18471,549

18481,095

1849896

1850265

1851386

In the Customs' returns of imports to this country, two articles are enumerated, under the separate names of cutch and terra japonica; the former is catechu and the latter the produce of the gambier plant. The imports of gambier were, in 1836, 970 tons; 1837, 2,738 tons; 1838, 1,600 tons; 1839, 5,213 tons.

Cutch.Terra Japonica.

tons.tons.

1848Imported to the United Kingdom1,1865,623

"Retained for home consumption7655,102

1849Imported1,6366,851

"Retained for home consumption8695,400

1850Imported1,1724,585

"Home consumption7873,655

1851Imported2,4014,783

"Home consumption2,0204,431

1852Imported2,2363,244

"Home consumption1,7083,003

Catechu, imported under its Indian name of cutch, is brought over in bales or baskets of from one to four cwt., the price being £18 to £25 per ton. About 450 cwt. of terra japonica or gambier is annually imported into Hull from the East Indies. The imports of the two substances into Liverpool is about 900 tons. Gambier is only worth £13 to £14 the ton; a few years ago it fetched 26s. the cwt. The imports into the port of London average 1,500 tons annually.

4,679 bales, and 14,436 baskets of terra japonica were imported into Liverpool in 1851, and 14,000 bales and baskets in 1852. The imports of cutch were 10,290 bags, and 2,592 baskets, in 1851, and 11,873 bags and baskets in 1852; the prices, which were from 16s. 6d. to 18s. per cwt. for each article, in 1851, were rapidly run up in Liverpool, in 1853, owing to short supplies, to 25s. for gambier, and 22s. to 24s. per cwt. for cutch, or catechu.

EXPORTS OF GAMBIER FROM SINGAPORE, WITH THE OFFICIAL VALUE IN RUPEES.

Piculs.Value in rupees.

1840-41Exported79,508457,560

"Growth of Singapore59,325

1841-42Exported93,340470,790

"Growth of Singapore47,696

1842-43Exported148,746548,281

"Growth of Singapore110,151

1843-44Exported139,050584,449

"Growth of Singapore121,791

1844-45Exported157,654539,978

"Growth of Singapore134,528

1845-46Exported110,766425,643

"Growth of Singapore75,797

1846-47Exported173,117591,943

"Growth of Singapore143,795

The exports of gambier from Singapore were as follows:—

To England.To the Continent.Total.

piculs.piculs.piculs.

1849134,5466,121140,667

185087,61116,166103,777

185168,36511,63980,004

185268,0459,00677,051

The exports of cutch from Pinang, in the last four years, have been:—1849, 3,693 piculs; 1850, 900; 1851, 4,143; 1852, 3,880; or, on an average, 197 tons.

DIVI-DIVI is the commercial name for the curved pod of a leguminous shrub, Cæsalpinia coriaria, which is sometimes imported from Carthage. Its tannin differs materially from that of nutgalls. The quantity of mucilage which it contains precludes it from the use of dyers; but, as it furnishes nearly 50 per cent. of tannin, it is largely used by curriers. It is imported into Liverpool from Rio de la Hacha, Maracaibo, and Savanila. 400 tons of the seed pods and bark of the Algaroba, or Locust-tree (Prosopis pallida) were imported in 1849 into Liverpool from Valparaiso, as a substitute for divi-divi in tanning. 3,200 lbs. of divi-divi were exported from the port of Augostara, in 1846.

Specimens of divi-divi which had been raised at Calcutta were shown in the Indian department of the Great Exhibition.

Dr. Hamilton states that, according to some admirably conducted experiments of Mr. Rootsey, of Bristol, undertaken at his request, the pods of divi-divi contain above 50 per cent. of tannin. It appears also, from trials made, that one part of divi-divi is sufficient for tanning as much leather as four parts of bark, and the process occupies but one-third of the time.

The average produce of pods from a full-grown tree has been estimated at 100 lbs. weight, one-fourth of which consists of seeds or refuse, leaving about 75 lbs. of marketable matter.

At an interval of six feet apart, an acre of ground will contain 1,210 trees, yielding an average of 810 cwts., and 30 pounds, or above 40½ tons of marketable matter, worth, at only £5 per ton, £200. Should the interval between the trees be extended two feet more, we shall still have 680 to the acre, the produce of which would not improbably be increased by the increased space given for the extension of the branches.

The ground in which this tree admits of being cultivated is that which is least adapted to the staple products of tropical agriculture; guinea grass may be profitably raised beneath its shade and as with the exception of the three years which precede the commencement of its bearing, there is hardly any deduction to be made from its returns, it promises to be among the most valuable objects of a planter's attention.

Jacquin describes the Cæsalpinia coriaria as a handsome branching tree, of about fifteen feet in stature, covered with a dark spotted bark. Its leaves are doubly pinnate, and the leaflets of twelve pair without a terminal one; they are oblong, obtuse, smooth, very entire. The flowers are disposed in spikes issuing from the extremities of the branches; they are small, yellowish, and slightly fragrant. To these succeed oblong, compressed, somewhat obtuse pods, curved laterally, the inner side being concave and the other convex. The seeds rarely exceed three or four in each pod, and are of a brownish color.

Divi-divi resembles a dried pea-shuck curled up, filled with yellow powder, and a few dark brown seeds. The price ranges from £8 to £13 per ton.

The imports into the United Kingdom in 1844, were 3,900 tons; in 1845 and 1846, about 1,400 tons each year; during the subsequent three years the imports were merely nominal, but in 1850 a renewed demand seems to have sprung up, for 2,770 tons were imported into Liverpool, and a few tons into London.

CORK-TREE BARK (Quercus suber) has been imported into Ireland to a considerable extent, frequently to the amount of 1,500 tons annually. The quantity of cork imported annually into the United Kingdom is about 3,000 tons. It is brought from Spain, Italy, and Barbary. Oak bark and valonia being very cheap and plentiful, the price of cork hark is only nominal, being, for Spanish cork-tree bark, £7 10s. to £8 per ton; Leghorn ditto, £6 to £7 per ton. It is less astringent than oak bark, and is more generally useful for stoppers of bottles and bungs for casks. 160 tons of cork-tree bark were imported into Liverpool from Rabat in 1849, and 150 tons in 1850.

1,867 cwts. of bark for tanning were imported from Chili in 1844, of which 292 were Quillai bark.

MIMOSA BARK.—The bark of the Mimosa decurrens, which abounds in Australia and Van Diemen's Land, is found to be a very powerful tanning agent.

The first shipment of tannin was made from Sydney to England as far back as 1823, in the shape of an extract of the bark of two species of mimosa, which was readily purchased by the tanners at the rate of £50 per ton. One ton of bark had produced four cwts. of extract of the consistency of tar.

In 1843, 3,078 tons of mimosa bark was shipped from Port Phillip to Great Britain. The price then realised in the London market was £12 to £14 per ton, but it has since declined to £8 a ton. The quantity of this bark to be procured in the colony is quite inexhaustible. The price of chopped mimosa bark in Australia, for export, in the close of 1846, was £2 5s. per ton. Bark valued at £912 was exported from Van Diemen's Land in 1848.

The imports of mimosa bark have only been to a limited extent within the last few years, reaching 350 tons in 1850, against 110 tons in 1849, 230 tons in 1848, and 600 tons in 1847. The prices realised were £10 to £11 for chopped, £12 to £12 10s. for ground, and £8 to £9 per ton for unchopped bark. Whilst the imports were 3,900 tons in 1814, they dwindled to less than 400 tons in 1850.

From an experiment, conducted by Professor Brandt, the strength of the mimosa bark, as compared with that of young English oak bark, is found to be in the proportion of 57 to 39, so that the mimosa bark is half as strong again as the best English bark.

Mr. Samuel Mossman, in a communication to the Botanic Society of Edinburgh, in 1851, stated that the bark of A. dealbata pays to ship to England, notwithstanding the distance, from the fact of its containing a greater per centage of tannin than any other bark. It is a handsome tree, from fifteen to thirty feet high, forming luxuriant groves on the banks of streams, most abundant in Port Phillip and Twofold Bay, between the parallels of latitude 34 and 30 degrees.

New Zealand is rich in barks and dyes. The bark of the Tanahaka (Phyllodadus trichomanoides, of Don) is used by the natives as a red dye for the ornamental parts of their kaitahas, their best border garments. There is also another red dye, called Tawaivwai, the bark of which is very profuse. A black dye is procured from the hinau. They are of a rich hue, and exceedingly fast colors. The barks are to be found all over the colony. The hinau and tanahaka are employed in tanning, all the leather used in the colony being tanned either at the Bay of Islands or Port Nicholson.

The bark of the Rimu or red pine (Dacrydium Cupressinum, of Solander), a very common tree, possesses tanning qualities far superior to any of the Australian barks. One pound of the bark yields 85 grains of extract.

The native tanning barks of New Zealand are various and easily obtained. Specimens of the bark and dye, &c., of most of these trees were sent home to the Great Exhibition. One pound of the Tanahaka bark is said to yield 63 grains of tannin. The sails of boats are dyed with it to preserve them. The Towai (Licospermum racemosum, of Don, Weinmaunia racemosa, Decandole), is supposed to be valuable for the purposes of the tanner, and is said to yield 104 grains of tannin for every pound of bark. The bark of the Pohutu kawa of the natives, the Metrosideros tomentosaof Richard, and Callistemon ellipticum of Allan Cunningham, would also be useful for tanning, one pound of it furnishing about 60 grains of tannin.

The bark of the Hino tree, the Elæocarpus hinau of Cunningham, the Dicera dentata of Forster, is used by the natives for dyeing black.

The black mangrove (Rhizophora mangle) is a tree attaining an altitude of from 30 to 50 feet, and occupying marshy situations in the vicinity of the sea. Almost every part of the mangrove—the bark, roots, and the fruit more particularly—abounds in an astringent principle, which is successfully applied to the purposes of tanning. As the tree is so abundant within the tropics, it might be worth the while of some practical speculator to make an extract on the spot, and introduce it into the English market, for the use of tanners and dyers. For tanning, the mangrove is said to be infinitely superior to oak bark, completing in six weeks an operation which with the latter occupies at least six months, and the sole-leather so tanned is said to be more durable than any other. The bark and leaves, which contain nearly as much tannin as the oak, are made use of in the West Indies, as well as in Scinde and other parts of Asia.

3,713 piculs of mangrove bark, valued at £819, were shipped from Shanghae, one of the Chinese ports, in 1849.

MYROBALANS.—This is a name applied to the almond-like kernels of a nut or dried fruit of the plum kind, of which there are several sorts known in the East. They are the produce of various species of Terminalia, as T. Bellerica, chebula, citrina, and angustifolia. They vary from the size of olives to that of gall nuts, and have a rough, bitter, and unpleasant taste. Many of the trees of this tribe, which are all natives of the tropical regions of Asia, Africa, and America, are used for tanning, and some for dyeing. They are highly valued by dyers, creating, when mixed with alum, a durable dark brown yellow. Myrobalans fetch in the Bombay market 8s. to 26s. the Surat candy of 821 lbs. The bark and leaves of T. Catappa yield a black pigment, with which Indian ink is made; the seeds are eaten like almonds. A milky juice is said to flow from T. angustifolia, which, when dried, is fragrant, and, resembling Benzoin, is used as a kind of incense in the Catholic churches in the Mauritius. The fruit of T. Bellerica, and of T. Chebula, both useful timber trees, indigenous to the East Indies, are used medicinally as a tonic and astringent. 117 cwts. of myrobalans were shipped from Ceylon in 1845.

The annual imports of myrobalans into Hull, amount to about 1,600 cwts. The quantity which arrived at Liverpool was 185 tons in 1849, 851 tons in 1850; 27,212 bags in 1851, and 19,946 bags in 1852; they come from Calcutta and Bombay, and are also used for dyeing yellow and black. The price in January, 1853, was 6s. to 12s. per cwt. The average annual imports into the United Kingdom may be taken at 1,200 tons.

KINO.—The Kino, of Botany Bay and Van Diemen's Land, is the produce of the iron bark tree, Eucalyptus resinifera. White ("Journal of a Voyage to New South Wales"), says this tree sometimes yields, on incision, 60 gallons of juice. Kino is imported in boxes. The tincture of kino is used medicinally, but an inconvenience is frequently found to arise, from its changing to the gelatinous form. Dr. Pereira seems to think this species of kino consists principally of pectin and tannic acid. That chiefly used as East Indian kino, is an extract formed by inspissating a decoction of the branches and twigs of the gambler plant. Vauquelin analysed it, and found it to consist of, tannin and peculiar extractive matter, 75; red gum, 24; insoluble matter, 1.

The East Indian kino, imported from Bombay and Tellicherry, is the produce of Pterocarpus marsupium, a lofty, broad-spreading forest tree, which blossoms in October and November. The bark is of a greyish color, and is upwards of half an inch in thickness on the trunk. When cut, a blood-red juice speedily exudes and trickles down; it soon thickens, and becomes hard in the course of fifteen or sixteen hours. The gum is extracted in the season when the tree is in blossom, by making longitudinal incisions in the bark round the trunk, so as to let the gum ooze down a broad leaf, placed as a spout, into a receiver. When the receiver is filled it is removed. The gum is dried in the sun until it crumbles, and then filled in wooden boxes for exportation.

P. erinaceus, a tree 40 to 50 feet in height, a native of the woods of the Gambia and Senegal, furnishes kino, but none is collected in or exported from Africa. Butea frondosa, or the dhak tree of the East Indies, furnishes a similar product, in the shape of a milky, colored, brittle, and very astringent gum. Kino is used as a powerful astringent, and is administered in the form of powder and tincture. Some specimens of Butea kino, analysed by Prof. Solly, after the impurities had been separated, yielded 73¼ per cent. of tannin.

VALONIA is the commercial name of the cupula or cup of the acorn, produced by the Quercus ægilops and its varieties, the Balonia or Valonia oak, natives of the Levant, from whence, and the Morea, they form a very considerable article of export; containing abundance of tannin they are largely used by tanners. The tannin differs materially from that of nutgalls. The bark of Q. tinctorea, a native of North America, yields a yellow dye.

The quantity of valonia imported for home consumption, in 1836, was 80,511 cwts., of which Turkey furnished 58,724 cwts., and Italy and the Ionian islands 7,209 cwts. Of 163,983 cwts. imported in 1840, 143,095 cwts. were brought from Turkey, 15,195 cwts. from Italy, and the residue from Greece and the Ionian Islands. The entries for home consumption in the three years ending with 1842, amounted to about 8,200 tons a year. The increase since has been considerable, the imports having been, in 1848, 10,237 tons; in 1849, 16,671 tons; in 1850, 12,526 tons; in 1851, 10,639 tons; in 1852, 13,870 tons. We receive about 14,000 to 20,000 cwts. annually from Leghorn. The imports into the port of Hull are 3,900 cwts. per year.

The prices of Smyrna valonias are from £13 to £14 per ton; those of picked Morea, £10 per ton. The duty received on valonias imported in 1842 was about £4,000.

The annual produce is sufficient to meet the wants of all Europe. It can be had in Turkey to any extent and at all periods. Many cargoes are sent to Dublin, and the German markets. A little valonia is exported from Manila, the shipments having been about 150 tons per annum.

Camata and Camatina are two varieties of very young valonias, which are found more valuable for some processes of tanning than the common kinds.

Extensive as has been the enumeration of the vegetable substances used in the various branches of art and manufacture which have formed the principal subjects of this section, it is probable that with the progress of knowledge, of scientific experiment, and of investigation into the properties of given commodities, the list will be indefinitely increased. What I have stated will suffice to give the reader an idea of the surprising variety of sources from which we receive the raw materials which enable us to perfect some of the most elegant processes of manufacturing skill and ingenuity, and will further afford some criterion—though, of course, not a perfect one—for estimating the relative importance of the tanning and dyeing substances.