i6 



without cleansing the finger. They have no rela- 

 tion, however, to any surrounding parasite. 

 Micrococci, yeast, etc., are commonly found in 

 blood films, especially in the tropics. Further, we 

 have found from much experience that the com- 

 monest bodies to mistake for parasites are platelets 

 and, strange to say, leucocytes. Platelets (stained) 







lt\(e.yhicdtci.fc I ytUKSif fOtx,Q.l 



IS" 



Fig. z. Normal constituents of Blood: — 

 M = Mast Leucocyte 



may show a great variety of shape. They may 

 be sausage-shaped, oval, or elongated, or they may 

 vary in size from about one-fifth of a red cell to 

 masses three or four times, or even more, as great 



