ON STAINING FLUIDS, AND STAINING. 89 



Soluble Blue. 



Bismarck Brown. 



Chrysoidin. 



Eosin (Red). 



Eosin (Yellow). 



Fuchsin. 



Gentian Violet. 



Acid Green. 



Iodine Green. 



Magenta. 



Methyl Green. 



Methyl Violet. 



Orange. 



Rubin. 



Saffranin. 



Spiller's Purple. 



Vesuvin. 



Bismarck Brown. Make of this (and of all the 

 above) a saturated solution in alcohol (all these 

 solutions should be filtered at intervals of a few 

 weeks). Add a few drops to a small staining saucer 

 full of spirit, and place the specimens in it for a few 

 minutes. Remove them to alcohol, clear in xylol 

 and phenol and mount in xylol balsam. 



If it is desired to mount the specimens in Farrant's 

 medium, or glycerine, wash them first in alcohol, then 

 in distilled water. Bismarck Brown does not over- 

 stain, nor does it wash out readily either in water or 

 alcohol. It is suitable for bacteria and micrococci, 

 and forms a very good double stain in conjunction 

 with other colours : its brown tints render it a good 

 stain for preparations intended for micro-photo- 

 graphy. 



Eosin. Both red and yellow eosin are most use- 



