This is a glossy gelatine printing-out paper, which is extensively used both by amateurs and professionals. Print it quite dark. This paper, like most of the printing out varieties, may be toned either in a combined or a separate toning bath. A combined bath is one in which the print is toned and fixed in one bath. We advise all amateurs to shun combined baths. Most combined baths contain acetate of lead and the results are not permanent and in a few months or a year or perhaps several years, your pictures begin to turn yellow in the high lights and gradually fade until nothing is left of them. We strongly recommend the use of a separate bath for all printing-out papers and the general directions given under the head of Aristo papers, in regard to thorough fixing and long and careful washing, applies to nearly all of this class of papers. Lithium paper should be thoroughly washed and then toned in any alkaline toning bath. It may seem superfluous to many to describe how to test a bath, but on investigation we find that many amateurs do not understand what an acid or alkaline bath is, or how to ascertain what your bath is. Procure some red litmus paper from your dealer. It is put up in glass tubes or vials. Take a small strip and dip it in the solution. If the red litmus paper turns blue immediately, then your bath is very alkaline; if it remains red, then your bath is acid. If it turns blue slightly and the blue can only be seen after the paper is dry, then it is only slightly alkaline. To make it alkaline, gradually add sal soda or borax to the bath until the litmus paper shows, by turning blue, that it has become alkaline. Never guess at it and do not add too much alkali. Acid or neutral baths produce red or sepia tones, while alkaline baths produce darker tones, depending on the amount of alkali and gold used and the length of time the toning is continued. The manufacturers of Lithium papers recommend the following

Toning Bath:

Borax....................................................................1/2 oz.

Distilled Water.........................................................16oz.

To tone, take one ounce of this stock solution to two grains of chloride of gold and sixty ounces of water.

This bath should be prepared one hour before using. Sulphate of soda may be used in the same proportion as borax for making the stock solution. Test the bath by toning one picture. If the result is a red or undesirable tone, add the alkaline stock solution and let the bath stand a few minutes longer. Keep the prints in constant motion in the toning bath, taking those from the bottom and placing them on top. If you allow prints to remain one on top of the other, the result will be red streaks.

The length of time that prints are toned depends largely on the tone desired. If a dark tone, bluish-black in shade is desired, allow the prints to tone until the high lights turn just a trifle blue. Now fix for ten minutes in Fixing Bath.

Water...........................64 oz.

Hypo.............................2 oz.

Powdered Alum.................1/4 oz

Salt..............................1/2 oz.

Keep your prints well separated in the fixing bath and turn them often, as you do in the toning bath. Now wash your prints thoroughly in running water for about one hour and they are ready to finish.

In hot weather the following hardening solution is recommended:

Hardener.

Warm Water................64 oz.

Borax............................6 oz.

Sulphate of Soda................ 8 oz.

Powdered Alum.................16 oz.

This hardener is used prior to toning and washing. Use one ounce of the hardening solution to ten ounces of water and immerse the prints and keep them in motion for about five minutes. This paper is made by the Kirkland Lithium Paper Company, Denver, Colo.