FORMULAS FOR REAGENTS 
337 
MISCELLANEOUS 
Mayer’s Albumen Fixative.— 
White of egg (active principle). 50 c.c. 
Glycerin (to keep it from drying up). 50 c.c. 
Salicylate of soda (to keep out bacteria, etc.). 1 g. 
Shake well and filter. 
Land’s Gum Fixative.—• 
Gum arabic. 1 g. 
Potassium bichromate. 1 g. 
Water. 98 c.c. 
Dissolve the gum in water and add the bichromate of potash; 
or dissolve the gum in half the quantity of water and the bichromate 
of potash in the other half, and mix just before using. Le Page’s 
liquid glue may be used instead of the gum arabic. 
Land’s Tropical Developer.— 
Hydrokinon. 8 g. 
Metol. 3 g. 
Sodium Sulphite (dry). 30 g. 
(60 g. if crystals are used) 
Sodium carbonate (dry). 30 g. 
(90 g. if crystals are used) 
Potassium bromide. 2 g. 
Water. 1,000 c.c. 
Land’s Contrast Developer.— 
Hydrokinon. 20 g. 
Sodium sulphite (dry). 00 g. 
Sodium carbonate (dry). 140 g. 
Potassium bromide. 12 g. 
Water. 1,000 c.c. 
Schultze’s Maceration Fluid.— 
The ingredients are nitric acid and potassium chlorate. They are mixed 
only as the reagent is applied. See chapter on “Special Methods” (chap. xi). 
Jeffrey’s Maceration Fluid.—• 
Nitric acid (10 per cent in water). 50 c.c. 
Chromic acid (10 per cent in water). 50 c.c. 
For directions, see chapter xii. 
