REAGENTS AND STAINS. 215 



(8) LQFFLER'S MORDANT FOR FLAGELLA. 



Tannic acid 2 grams. 



Water 8 cc. 



Saturated solution of ferrous sul- 

 phate 5 cc. 



Saturated alcoholic solution of 

 fuchsin I cc. 



(9) ANILINE-WATER DYE FOR STAINING SPORES. 



Saturated alcoholic solution of 

 fuchsin or gentian violet .... 1 1 parts 



Aniline oil water 100 parts 



Abs. alcohol 10 parts 



Keeps well for ten days. 



(lO) AQUEOUS STAINS. 



Saturated aqueous solutions of fuchsin, gentian vio- 

 let, and methyline blue will be found useful for all 

 simple staining. 



(ll) ALCOHOLIC SOLUTIONS. 



Saturated alcoholic solutions of fuchsin, gentian- 

 violet, and methyline blue should be kept on hand to 



