Early Work In Photography
A Text-book For Beginners

Weights and Measures, Other Useful Formula. 99 solved. The permanency of the negative and freedom from stain, as well as the hardening of the film, depends upon this. Wooden boxes with vertical grooves to hold a number of plates, will be found both convenient and economical for fixing. When the bath becomes weakened by constant use, it must be replaced by a new one. Toning Bath for Prints. We recommend the following bath for prints on gelatino- chloride or albumenised paper. Stock Solution. Chloride of gold * .. ••• 15 grains Acetate of soda.. .. • • 48o grains Water, to .. • • • • 15 ounces Dissolve the acetate of soda in ten ounces of water, then break the tubes of gold in a glass graduate and pour some of the solution over them, stirring up with a glass rod; add this to the bottle of solution and pour some more over the broken tubes until all the gold is extracted; then add water to make 15 ounces. Store this bottle away from strong light, and label it "Stock toning solution, gold = 1 gr per oz. To make the toning bath, mix Stock toning solution .. .. 1OZ- Water .. • • • • 20 to 30 02 Test with blue litmus paper; if the paper becomes red, the solution is aci soda added to it, from becoming rec temperature of th nor higher than 75 again, for months, i use. — Combined Toning and Fixing Bath. This is commonly called known as " The Lazy Mans Bath • ” it is convenient and always ready for immediate use. It gives nice tones, fixes the prints at the same time, and necessitates no previous washing. ________________________ •The 15-gr. tubes of gold and sodium contain only 7] grs. of gold chloride unless guaranteed on the label. d, and must have a little carbonate 01 sufficient to prevent blue litmus paper 1: a few grains should be enough. The e bath should be not lower than 65° F, ° F. The bath may be used again and if strengthened with stock solution before