FIXING BLOOD-CORPUSCLES. 203 



blue-black by the nigrosin. Ehrlich has given the name eosinophilous 

 cells to those white corpuscles with several nuclei whose granular pro- 

 toplasm takes the eosin deeply. Other forms of colorless blood-cor- 

 puscles as amcebocytes and endothelioid cells are differentiated by this 

 mode of fixing and triple staining. The highest powers of the micro- 

 scope are required. 



