52 NORMAL BLOOD IN DOMESTICATED ANIMALS 



Table XIII. — Numbers of Leucocytes and Pekcentages of the 

 Varieties in the Blood of Normal Rabbits 



GUINEA PIG 



The red corpuscles vary from 4.25 to 6 millions with an aver- 

 age of 5.25 millions. The hemoglobin varies from 85 to 100 with 

 an average of 94. The leucocytes have been found to vary widely 

 in apparently normal animals. They vary from 5,000 to 22,000 

 with an average of 11,000 to 12,000. Considerable variation in 

 the numbers and percentages of the several varieties has been 

 obtained by different investigators. A difference in the age of 

 the animals examined may explain the variation. My animals 

 were six months to a year old. Perhaps those of the investigators 

 who found higher numbers of polymorphs and less lymphocytes 

 were older animals. 



Webb, Gilbert and Havens found the blood plates in guinea 

 pigs to have an average of 350,000 per cmm. at sea level and an 

 average of 434,000 (364,000-528,000) at Colorado Springs, Colo, 

 (an altitude of 6,000 ft.). 



