WALK IX.

JULY.

LET us be off to the fields once more; the sun is very hot, but we can find refreshing shade under the trees when we are tired. What is this beautiful little plant with bright scarlet flowers fully expanded? It is the scarlet pimpernel, or "poor man's weather-glass;" for on rainy days, and even before the showers are coming, the little plant, conscious of their approach, closes up its flowers. Other wild flowers, such as the convolvulus, close before rain. The little pimpernel, however, is supposed to be the best barometer. There is another thing about the pimpernel; you will not often see its blossoms expanded after three o'clock in the afternoon. In other countries, also, the regular closing of the flowers has been noticed. Dr. Seeman, who went as naturalist on one of the Arctic Expeditions, noticed the flowers to close during the long day of an arctic summer. "Although," he says, "the sun never sets while it lasts, the plants make no mistake about the time, when if it be not night it ought to be, but regularly as the evening hours approach, and when a midnight sun is several degrees above the horizon, they droop their leaves, and sleep even as they do at sunset in more favoured climes." Look at the bright scarlet flower, with its small purple eye. Excepting poppies, with their dazzling brightness, I do not think there is another wild flower that has scarlet petals. However, the blossoms are not always scarlet; there is a white variety with a purple eye, and another having a dark blue blossom.

SCARLET PIMPERNEL.

Well, Jack, you have found something, have you? Ah! this is a queer plant, it has queer habits, and a queer name; it is called "Jack-go-to-bed at noon." We sometimes call you after the name of another plant, "Jack-by-the-hedge." May, of course, is "May," or hawthorn blossom, and Robin at home, from his often tearing his clothes, is "Ragged Robin." Another name for the plant you hold in your hand is goat's beard; the leaves are long and grass-like, the flowers bright yellow; it is not yet quite eleven o'clock, and the blossoms are expanded; they generally close about noon. Look at the colour of the stem, it has a kind of sea-green bloom upon it. Well, you would never find this plant with blossom expanded in the afternoon; so "Jack-go-to-bed at noon" is really not a bad name for it.

Here we are at a stream; do you see those things at the bottom slowly moving? They seem to be bits of stick. "I know what they are," said Jack, "there is a good fat maggot in each of these cases; they are caddis-worms." Quite right, and in time they will change to insects. Here is another kind; the house is made of small bits of gravel, and it is attached to this smooth stone. I will break open the case; do you see inside is a long cylindrical case, with a thin covering; I slit this open with my penknife, and now you see the creature inside. There are a great variety of these caddis-worms, and most interesting it is to notice the different kind of houses they build. Some of the larvæ live in movable cases, as we have seen, some in fixed habitations; the materials, too, out of which the different cases are constructed, are different, sometimes they are bits of gravel, or sand, wood, leaves, grass, the empty shells of various fresh-water molluscs. The fragments of stick and the small bits of gravel are held together by a kind of cement which the larva spins from his mouth. Sometimes we may meet with cases made of sand, having on either side long slender bits of rush or stick. A lady once took a number of the larvæ out of their cases, and placed them in a vessel of water with various materials, such as coloured glass, cornelian, agate, onyx, brass filings, coralline, tortoiseshell; and these little maggoty things made use of and built their houses out of them. The perfect insect has four wings; and from these being closely covered with hairs, the order to which they belong has received the name of Trichoptera, which means "having hairy wings." You must know many of these insects; they are very common near ponds and streams; generally they fly in a zig-zag fashion, and have the appearance of moths.

a, b, c, d. Larva, cocoon, nympha, and insect of Caddis-fly.

Ah! here is a splendid bed of the forget-me-not growing on this bank near the stream. Look at the blue enamel-like flowers, each with a yellow centre-eye; the leaves are bright green and rather rough. There are other species very much resembling this one you may often see in hedgerows and fields; but they are generally smaller plants; this one is the true forget-me-not. There are several stories about the origin of the name. Here is one:—Many years ago, a lady and knight were wandering by a river; the lady espied these bright blue flowers, on a small islet I suppose, in the deep river, and wished to possess them. Her lover immediately plunged in and plucked the plants, but the strength of the stream was too much for him on his return. With a great effort, however, he threw the flowers on the bank, exclaiming "Forget-me-not," and sank!

We must proceed on our walk and not linger too long here, though, I must own, it is hard to tear oneself away from the banks of a gently-flowing river. So good-by to

GOLDFINCH.

As we crossed the road we met two men with cage-traps, and a slender twig covered thickly with bird-lime. In each cage-trap was a tame goldfinch, which were the decoy birds. The men had only succeeded in taking one goldfinch—for which they asked half a crown. The decoy birds attract other goldfinches by their call-note; these sometimes alight on the trap, which instantly closes upon them; sometimes they alight on the twig smeared with bird-lime, which is so sticky that they cannot free themselves from it. "Gay plumage, lively habits, an agreeable form and song, with a disposition to become attached to those who feed them, are such strong recommendations, that the goldfinch has been, and will probably continue to be, one of the most general cage favourites. So well also do the birds of this species bear confinement, that they have been known to live ten years in captivity, continuing in song the greater part of each year. This tendency to sing and call make them valuable as brace-birds, decoy-birds, and call-birds, to be used by the birdcatcher with his ground nets, while the facility with which others are captured, the numbers to be obtained, and the constant demand for them by the public, render the goldfinch one of the most important species included within the bird-dealer's traffic."

Mr. Mayhew says that a goldfinch has been known to exist twenty-three years in a cage. The same person tells us that goldfinches are sold in the streets of London from sixpence to a shilling each, and when there is an extra catch, and the shops are fully stocked, at threepence and fourpence each. Only think, it is computed that as many as 70,000 song birds are captured every year about London; the street sale of the goldfinch being about a tenth of the whole. Goldfinches may be taught to perform many amusing tricks, to draw up water for themselves by a small thimble-sized bucket, or to raise the lid of a small box to obtain the seed within. A goldfinch has been trained to appear dead; it could be held up by the tail or claw without exhibiting any signs of life, or to stand on its head with its claws in the air, or to imitate a Dutch milk-maid going to market with pails on its shoulders, or to appear as a soldier, keeping guard as sentinel. One was once trained to act as a cannoneer with a cap on its head, a firelock on its shoulder, and a match in its claw; it would then discharge a small cannon. "The same bird also acted as if it had been wounded. It was wheeled in a barrow, to convey it, as it were, to the hospital; after which it flew away before the company." Another turned a kind of windmill; another stood in the midst of some fireworks, which were discharged all around it, without showing any fear. When we consider how docile and affectionate many birds become; when we think of their beauty and the sweet music they pour from their little throats; when we consider also of what immense use a great number of species are to man in helping to check injurious insects and caterpillars; does it not seem strange that they meet with so little protection? How often, as you know, we have met lads and great strong men with helpless fledglings in their hands, which they intend to torture in some way or other; perhaps they will tie strings to their legs and drag them about, or place them on a large stone and throw at them. To expostulate with them on the wickedness of such barbarous conduct is hopeless; one might as well quote Hebrew to a tadpole!

How noisy the grasshoppers are, with their incessant shrill chirpings; how thoroughly they enjoy the heat and sun! Just catch me one or two, Willy; there, one has hopped just before you; now he is on that blade of grass. Have you got him? No? Well, take this gauze net. Now you have him. "How does the grasshopper make that peculiar sound?" asked May. If you will get near one of these insects while he is making the noise you will see how he does it. There, one stands on that plantain stem. Do you see how briskly he rubs his legs against the wing-covers? Now he is quiet, and his legs are still; so it is evident that the friction or rubbing of the legs against the wings causes the sound. I rub the thigh of this specimen I hold in my hands against the wing. You distinctly hear the shrill sound. It is the males only who make the noise; the females are mute. Some people have described another organ which seems to increase the sound. I have sometimes placed both field-crickets and grasshoppers under a tumbler, and supplied them with moist blades of grass; it is curious to see how fast they eat them. You should remember that the grasshopper is a relative of the locust, to which, indeed, it bears a close resemblance; only the locust is a much larger insect. There are several species of locusts, and all are extremely injurious. You have read in the Bible of the fearful damage they are able to cause to the trees and various crops. It is seldom that locusts visit this country, happily, for there is not a greater insect scourge in existence. Our green grasshopper is also related to the cricket, so merrily noisy in dwelling-houses. Crickets are difficult to get rid of when they have thoroughly established themselves in a house. Like many noisy persons, crickets like to hear nobody louder than themselves; and some one relates that a woman who had tried in vain every method she could think of to banish them from her house, at last got rid of them by the noise made by drums and trumpets, which she had procured to entertain her guests at a wedding. It is said, but you need not believe the story, that they instantly forsook the house, and the woman heard of them no more. Possibly some half dozen more women in the house would have had the same effect, without the musical instruments! What do you say to that idea, May? "That is too bad of you, papa, but you know you are only joking."

a, b, c. Leg, wing-cover, and wing of Grasshopper, magnified.

Here is a large pond, and from this bank we can look down into the water. There are some yellow water-lilies with their broad expanded leaves. I have noticed that the blossoms are often attacked by the larvæ of some two-winged flies. These flies lay their eggs within the petals, "lily-cradled" literally; the eggs hatch and the larvæ eat the cradle. I do not know more of these flies: I have often meant to trace their history, but have somehow forgotten to do so. Do you see that pike basking on the top of the water; how still and motionless he lies. He is a good-sized fish, at least I should say he was four pounds weight. "I wish we could catch him," said Willy. We have no tackle with us; besides, when pike are sunning themselves in that way on the top of the water, they are seldom inclined to take a bait. "What is the largest pike," asked Jack, "you ever saw caught?" The largest I ever saw alive was caught in the canal about five years ago; it weighed twenty-one pounds, and was really a splendid fish. What voracious fish they are; they will often take young ducks, water-hens and coots, and will sometimes try to swallow a fish much too large for their throats. It is said that a pike once seized the head of a swan as she was feeding under water, and gorged so much of it as killed them both. The servants perceiving the swan with its head under water for a longer time than usual, took the boat and found both swan and pike dead. "Gesner relates that a pike in the Rhone seized on the lips of a mule that was brought to water, and that the beast drew the fish out before it could disengage itself. Walton was assured by his friend Mr. Segrave, who kept tame otters, that he had known a pike, in extreme hunger, fight with one of his otters for a carp that the otter had caught and was then bringing out of the water. A woman in Poland had her foot seized by a pike as she was washing clothes in a pond." Mr. Jesse tells the story of a gentleman, who, as he was one day walking by the side of the river Wey, saw a large pike in a shallow creek. He immediately pulled off his coat, tucked up his shirt sleeves, and went into the water to intercept the return of the fish to the river, and to endeavour to throw it out upon the bank by getting his hands under it. During this attempt the pike, finding he could not make his escape, seized one of the arms of the gentleman, and lacerated it so much that the marks of the wound were visible for a long time afterwards. Pike will live to a great age, ninety years or more. In the year 1497, according to old Gesner, a pike was taken at Halibrun in Suabia with a brazen ring attached to it, on which was the following inscription in Greek:—"I am the fish which was put into the lake by the hands of the governor of the universe, Frederick the Second, the 5th of October, 1230." This pike, therefore, would be two hundred and sixty-seven years old; people said it weighed three hundred and fifty pounds, and that its skeleton was nineteen feet long. I will show you a picture of this ring in Gesner's book when we get home.