48 NORMAL BLOOD IN DOMESTICATED ANIMALS 



Table IX. 



Si mmart of Examinations of the Blood of Normal Cats 

 by Different Investigators 



The percentages of the varieties of leucocytes in the blood of 

 normal cats obtained by Busch and Van Bergen are as follows: 



I. Small mononuclears 34.38% 



II. Large mononuclears 4.89 



Ilia. Polymorphonuclear without granules 54. 15 55.5 



Illb. Polymorphonuclear with fine granules 1.30 



IVa. Polymorphonuclear with large coarse rod- 

 shaped oxyphile granules 0.9 



IVb. Polymorphonuclear with large medium round } 5.2 



oxyphile granules 4.35 



V. Mast cells 0.035 



In making two varieties each of polymorphs and rosins, Busch 

 and Van Bergen have followed Hirschfeld. There does not seem 

 to be sufficient reason for giving the cat more varieties of leucocytes 

 than the other mammals. In other animals than cats one can 

 find polymorphs in which the granules are indistinguishable or 

 barely visible. Very slight differences in the technic of staining 

 have been observed to produce similar differences in the staining 

 of these granules. The great majority of eosins contain rod-shaped 

 granules, though round and oval forms may be found in the cells 

 containing mostly rod-shaped granules. Variations in the shape 

 of the granules are seen in other animals than cats. 



