The Dictionary Of Photography

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

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every sheet of paper to be toned. After use, the bath may be filtered and preserved to dilute the next bath.
2. Bicarbonate and Acetate Bath.
Add the gold and bicarbonate of soda to 2 ozs. of water, shaking occasionally, and keep till colourless; then add the acetate and remainder of water, and keep for six hours, and dilute as for the acetate bath. The same directions apply to this bath as to No. 1, Rich purple-black tones are obtained.
These give warm brown tones, the latter inclining to purplish black. They can be used as soon as made, but will not keep.
5. Phosphate Bath.
Gives warm purplish tones. May be used as soon as mixed. Will not keep.