Formulae for Reagents 305 



Gold Orange.- 



Gold orange 1 g. 



Clove oil 100 c.c. 



Bismarck Brown.- 



Bismarck brown 2 g. 



70 per cent alcohol 100 c.c. 



Nigrosin.- 



Nigrosin 1 g. 



Water 100 c.c. 



Gram's Solution.- 



lodine 1 g. 



Iodide of potassium 2 g. 



Water 300 c.c. 



MISCELLANEOUS 



Mayer's Albumen Fixative.- 



White of egg (active principle) 50 c.c. 



Glycerin (to keep it from drying up) 50 c.c. 



Salycilate 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. 



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). 



Iodine (solution for starch test).- 



Dissolve 1 g. potassium iodide in 100 c.c. of water and add 0.3 g. sub- 

 limed iodine. 



