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Golden Days for Boys and Girls, Vol. XII, Jan. 3, 1891

PART II.

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If you simply desire to get a picture from your negative in the easiest and quickest way, without going through the necessary processes which are involved in toning, you can use cyanotype paper, which requires but one process for the completion of the picture and that process simply a bath in clean water.

Prints made upon this cyanotype paper have a beautiful blue tone, and are so simple and easily made that they are very popular. This cyanotype paper is sold in any desired quantity and size, and it is never worth while for the amateur to prepare his own paper, as it is a tedious and uncertain process.

When you are sure the negative is thoroughly dry, place it in the printing frame with the film side uppermost, and upon it lay a sheet of the cyanotype paper cut the right size, with the prepared side next to the film of the negative.

The frame should then be put where the sun's rays will fall upon the glass, and allowed to remain there till the cyanotype paper has turned to a dull bronze in the shadows.

It will be necessary to look at the print from time to time to see when this point is reached. If the paper is not allowed to print long enough, the result will be that the picture will wash off the paper when it is put in water.

When you think it is done, place it in running water, or in several changes of water, and wash it thoroughly. It should be washed till the water that drips from it is no longer discolored, but is perfectly clear. The picture then should stand out in blue tones on a clear white ground.

If you prefer to use the ready sensitized paper, there is a preliminary process through which the paper must pass before you print it. This process is called "fuming," and consists in exposing the paper to the fumes of ammonia for a short time.

A fuming-box is needful, but one can easily be constructed, without the expense of purchasing this convenience. Take a wooden box about two feet cube, and, with hinges, make a door of the cover. Close all the cracks with strips of cloth so that the box will be both light and air tight, and fasten corresponding strips around the edges of the door so that no light will make its way in there.

Stretch two or three strings across the box near the top, on which to hang the paper that is to be fumed, and put a small flat dish in the bottom of the box.

When you are ready to fume your paper, pin two sheets together, back to back, and hang them on one of the strings. Several sheets can be fumed at once in this manner. Fill the dish with ammonia, and closing the door tightly, let the paper absorb the fumes for fifteen or twenty minutes.

After fuming, the paper should be given a short time to dry before it is used for printing. It should then be put in the printing frame in the same way as the cyanotype paper and exposed to the sun.

If your negative is a thin one, a diffused light is better for printing than the direct rays of the sun. Diffused light is a strong light that is not sunlight.

If the negative is exceedingly thin, the light indoors, away from the window, will be sufficient. Satisfactory results cannot of course be achieved with too thin a negative, but this diffused light will give the best print that you can obtain.

In examining the print from time to time be sure that you do not open both sides of the printing frame at once, for if you should do this, you will find it impossible to replace the print in exactly the same position, and so it will be spoiled by being printed with double lines.

No exact rule can be given for the length of time which should be allowed for the printing of a negative. It should, however, be allowed to become twice as dark as it ought to be after the picture is toned and mounted. The after processes of toning bleach the print very much, as the amateur will discover for himself.

If a negative is very dense or thick, as over-development will sometimes cause it to become, the time for printing will be considerably extended. While in a good light, with a negative of the right density, five minutes or less is sufficient to print a negative, three or four hours will sometimes be required.

When the print has become dark enough, it should be removed from the printing frame and put at once in a dark place where the light cannot reach it. It is what is known as a proof at this stage, and the light will turn it black.

About twenty prints can be toned at once, and, as it is a long process, it is better to wait until several have accumulated than to go through the various operations with only one or two prints.

They should first be trimmed to the required size. Some amateurs leave the trimming until after they have finished the toning process, but this is not advisable for several reasons. In the first place, it is easier to trim them beforehand, because they lie flat and are not curled up, as they generally are after toning. None of the toning solution is wasted in toning the parts that are of no use, and if the accumulated clippings are saved, they are of some value on account of the silver in them.

The trimming cannot be satisfactorily done with a pair of scissors, as it is impossible to cut perfectly straight. A thick piece of glass called a cutting mould is used, and a convenient little instrument called Robinson's trimmer. If you do not wish to go to the expense of these articles, however, you can manage very well by using a sharp pen-knife to cut with and any piece of glass with straight edges to trim by.

You should have a firm, hard substance to cut on (glass is preferable), and on this should be put a piece of paper. Upon this paper the print should be laid face downward, and after you have decided how much of it you are going to cut away, draw your knife firmly along by the edge of the glass, pressing down well, and the strips will be cut off leaving a smooth, straight edge.

After the prints have been trimmed, they should be soaked in water for fifteen minutes. If you have not running water in which to place them, the water should be changed several times. This preliminary washing must be very thorough, or the toning will not be satisfactory.

To prepare your toning bath, make up first a stock solution of fifteen ounces of water and fifteen grains of chloride of gold and sodium. The chloride of gold and sodium can be obtained in small bottles which come for the convenience of the amateur prepared in just the desired quantity.

For a toning bath for twenty prints, take ten ounces of water, three grains of sodic bicarbonate, six grains of sodic chloride (common salt), and three ounces of your stock solution of gold. Add to this bath three ounces of the stock solution of gold that has had three drops of saturated solution of bicarbonate of soda added to it. This bath should be alkaline, and you can test it with red litmus paper. If it turns the paper slightly blue, it is ready for use. Put this bath in a flat tray (porcelain preferably), and then lay the prints in it face down. Move them all the time, to insure evenness of tone and to prevent spots. It is a good plan to keep drawing out the undermost one, and putting it on the top.

The prints are of a reddish-brown color when they are put into the toning bath, and in about fifteen or twenty minutes they begin to turn to a rich purplish black. Experience will teach the amateur at what point the prints should be removed from this bath. They should lie long enough to have every tinge of red entirely removed, and yet not long enough to turn the prints to a dull gray.

When the prints have been sufficiently toned, they should be thoroughly washed and then put into the fixing bath. This bath is made of one gallon of water, one pound of sodic hyposulphite, one tablespoonful sodic bicarbonate, and one tablespoonful common salt.

These ingredients should be thoroughly dissolved, and then a portion put in a tray. This tray must be kept for the fixing bath and not be used for any other purpose. The prints are put in the tray in the same manner as in the toning bath, and moved continually until they are fixed.

This process should take fifteen minutes, or, if the bath is rather cool, the time may be extended to twenty minutes.

After the prints have been removed from the fixing bath they are put in a strong solution of salt and water, to prevent their blistering. After they have been in this solution for about five minutes they are then ready for their final washing. The prints should be left in running water for some hours, and there is very little danger of washing them too long or too thoroughly.

After every trace of the fixing bath has been removed, the prints may be taken from the water and dried between sheets of chemically-pure blotting paper. They will not curl up when dried in this way, as they do when simply exposed to the air.

The prints are now ready to mount. This is by no means the least difficult nor the least important of the many processes necessary to secure a successful picture. Even if care has been exercised in all the other processes, yet if the prints are carelessly mounted they will not look well.

The prints should be wet in clean water and laid in a pile upon each other, with their faces down. It is necessary to have a very adhesive paste to make the prints stick well to the mounts. There are some pastes that are manufactured for this purpose, but it is very easy to make one which will work equally well.

Boiled laundry starch, with the addition of a little white glue, is perhaps the best; it can be easily made, and with the addition of a few drops of carbolic acid will keep well. It is made in the proportion of one and three-quarter ounces of starch, mixed with one ounce of water, till it is a smooth paste, as thin as cream, and eighty grains of glue added with fourteen ounces of water. The whole should be well boiled and six drops of carbolic acid added. This can be put in a bottle and will keep a long time.

After the water is pressed from the wet prints a bristle brush is dipped in the paste and drawn back and forth over the print, till it is thoroughly covered.

The position on the mount should have been previously marked with a pencil or with pin-pricks, and when the print is well covered with paste it should be carefully lifted and put in place. With a piece of paper laid over it and a flat paper-cutter, all the unnecessary paste and any bubbles of air may be pressed out from between the print and the mount. With a soft cloth wipe away the paste that is pressed out around the edges of the print and then put it under a weight to dry.

If it is desired to mount prints in an album, a piece of cardboard, an eighth of an inch smaller than the print, should be placed upon the back of the print and the exposed edge covered with paste. Put on just as little as possible and lift it in place at once, before the paste has time to dry. Pass a soft cloth over it to press it into place and then close the album. In less than an hour it will be dry, and if properly mounted will be firmly adhering to the page.

The one important factor for success in photography is care. Without it, you can accomplish nothing, no matter how complete and costly your outfit may be. With care and patience you may achieve results that will be a pleasure to your friends as well as yourself, and will give permanent existence to pleasant scenes and occasions that otherwise must be only memory pictures.

[THE END.]

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