86 THE INOCULATION OF ANIMALS AND THEIR STUDY. 



Guinea-pigs and rabbits are usually inoculated in the abdom- 

 inal wall ; rats or mice in the loose tissue at the root of the 

 tail. 



Animal Holders. Various instruments have been devised 



FIG. 44. 



The Voges holder for guinea-pigs. (Abbott.) 



for keeping animals quiet during this operation, the most use- 

 ful of which are : Voges' guinea-pig-holder (Fig. 44) ; Kitasato's 

 mouse-holders (Fig. 45) ; and the basket mouse-holder (Fig. 46). 

 3. Intravenous injection or inoculation into the circulation 



