F, add 15 grains gold chloride and 150 grains strontium chloride, and heat to nearly boiling. Heat also 1.5 fld. A. Ammonium Sulphocyanide ten percent soln Soln. B. Sodium Phosphate ten percent soln Soln. C. A saturated Borax soln Soln.
Bath contains approx.
Apply with sort camel hair mop to dry print, tones in two minutes. 3 drachms Water 10 fld. Immerse dry prints in a ten percent salt bath for five minutes, wash and tone in above. 10 grains, Water 1 fld. The above will do for a start, if you want any more , please ask, I also have formulae for toning collodian P.O.P, Albumen paper etc.