Photography is but in its in our country, and although it is a far more important art, and is as old as the daguerreotype, still it is but little practiced in America. The difference between it and the daguerreotype, consists simply in the former embracing sun drawn pictures on paper, while the latter relates to sun-drawn pictures on metal plates. “ The Talbotype “ is also a name given to sun-drawn pictures on paper, after Fox Talbot, the discoverer. When we consider that with a number of sheets of prepared paper, an artist may go forth into the woods and wilds, and with his cimera copy the gigantic pine, the leaping waterfall, the snow capped mountain peak, or the embowered cottage, we may well conclude that the Talbotype is an art which is yet destined to achieve wonderful results.— Let us explain how the paper is prepared and the process conduc,ted. White paper of a good quality is selected, which is thoroughly impregnated with white wax by placing it upon a hot clean tin plate, and covering it with the wax in a melted state. All the superfluous . wax is removed by pressing the waxed paper between sheets of blotting paper, and pressing upon the top with a hot flat iron, until the waxed paper appears to be evenly saturated. Some rice water is then prepared by infusing about s ounces of good rice in 5 pints of water.— When the glutinous portion of the rice is dissolved, the clear is poured off, and one ounce and 140 grains of the sugar of milk, one-half ounce of the iodide of jini-aa-inm, I Jj grains of the cyanide of potassium, and 12 grains of the fluoride of potassium are dissolved in it.— This solution is then to be filtered through clear white filtering paper, and the waxed paper allowed to soak in it for half an hour, after which it is removed and dried carefully with a moderate heat in a clean place (not in sunshine.) With these ingredients in the proportions mentioned, it is best to make up a quantity of this liquid, and place a number of sheets in it at once, taking care to have them loose and perfectly covered. When dry, th ese sheets can be kept in a moderately cool place, wrapped up, for any length of time. To render them sensitive, a solution is made up as follows :—One-half ounce of distilled water, into which are dissolved 150 grains of the nitrate of silver to which are added 186 grains of acetic acid. (Any quantity of l1- quid may be made up according to the proportions given, so as to prepare a number of sheets at one time. The quantities given are only for small experiments). In this solution the sheets are immersed for short time, care being taken to remove all air bubbles from the surface of the paper; which, when it is tak en out, must be dried in the d ark, and may be kept afterwards (covered up from light) two or three days. The paper is now ready for the camera ob- scura, in which it is placed to take the impression of any object desired , like a d aguer- rean plate. The time required to take an impression is from one up to thirty minutes, as experience determines, which time depends on the character of the light and the object, the picture of which is to be tak en. After the paper is taken out of the camera, it is placed in a bath of two pints or distilled wa- tea, and 64 grains of gallic acid ; this brings out the picture on the paper, which, when fully developed, is fixed by soaking it for some time in a quart of distilled water, into which have been dissolved two ounces of the hyposulphite of soda. After having been taken out of this, it is well washed in clean water and dried, when it forms a well-defined negative picture, from which any number of positive impressions may be taken. The best light to work with for obtaining good pictures on the prepared paper is under a clear sky, when the' sun is shining, and when the light falls chiefly on the darker shades of the object, or scene, leaving such as are of light color under the influence of diffused light only. It requires practice to judge by the eye how to manage the time in the camera, according to the kind of light, and the object or objects to be represented. %
This article was originally published with the title "Photographic Pictures"