

a 





a 





r 



Stained with 



Methylene Blue 



and Eosin. 



Stained with 



Ehrlich's 

 Tri-acid Dye. 



Stained with 



Hsematoxylin 



and Eosin. 



The varieties of colourless corpuscles in normal human blood, 

 stained by different methods. 



a, Lymphocyte; b, large mono-nuclear hyaline leucocyte; c, transition 

 form ; d, polynuclear leucocyte ; e, eosinophile leucocyte ; /, mast-cell. 

 Magnified about itiOO times. (After Szymonowicz.) 



[Face page 456. 



