SUBCUTANEOUS INOCULATION OF ANIMALS. 209 



For larger animals the form of holder shown in Fig. 

 43 is commonly used. 



A very simple and useful holder for guinea-pigs 

 consists of a metal cylinder of about 5 cm. in diameter 



FIG. 44. 



The Voges-Rabinowitsch holder for guinea-pigs. 



and about 13 cm. long; closed at one end by a perfor- 

 ated cap of either tin or wire netting. Along the side 

 of this box is a longitudinal slit of 12 mm. wide that 

 runs for 9.5 cm. from within 0.5 mm. of the open ex- 

 tremity of the cylinder. 



