The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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Toning
of lime bath, the acetate being added in solution last. This gives warm black tones, and keeps well.
10.   Acetate and Borax Bath. Chloride of gold ... ... ... ...       15 grs,
Acetate of soda ... ... ... ...     150 ,,
Borax            ...............       15 ..
Distilled water ... ... ... ...       15 ozs.
Mix the gold and acetate in 3 ozs. of water, and keep for six hours. Add the borax dissolved in remainder, and use at once. This keeps fairly well, and gives brownish black tones.
11.   Carbonate of Lime Bath.
Chloride of gold ... ... ...... 15 grs.
Carbonate of lime (chalk) ... ... ... 75 ,,
Distilled water ... ... ... ... 15 ozs.
Mix the gold and chalk and water, and leave for one hour. Keeps fairly well, and gives brownish purple tones.
12. Tungstate Bath.
Chloride of gold ............ 15 grs.
Tungstate of soda ..          ......... 300 ,,
Distilled water (at 212o F.)           ...... 15 ozs.
Use when cooled. Gives very fine purplish brown tones. Keeps fairly well. Add an ounce of stock bath to the old bath for every sheet of paper used.
13. Uranium Toning Baths.
Uranium nitrate J _ ,
Chloride of gold fofeach......... \*'
Bicarbonate of soda           ... ... ...      20 grs.
Distilled water............      10 ozs.
This bath must be used as soon as mixed, and should be dis-tinctly alkaline in test papers. It gives very fine purplish black tones, and the author has found the best results follow complete elimination of free silver by salt-and-water bath previous to toning. The prints when toned should also be placed in salt and water.
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