274 



BACTEEIOIiOGY. 



The inoculated animals should be kept in glass jars, or 

 in wire cages which can be readily sterilized. It is undesir- 

 able and not safe to keep such animals in wooden boxes. 

 White mice or rats can be kept in battery jars. These 

 should be provided with a wire-gauze top, loaded down with 

 a mass of lead. Fig. 46 shows such a jar and also the cru- 

 cible or rat forceps ordinarily used. Rabbits, guinea-pigs, 

 etc. , can be kept in wire cages similar to the one shown in 

 Fig. 47. By removing the four thumb- screws on the upper 



Fig. 47. Vaughan's cage for rabbits, guinea-pigs, etc.; 

 sterilizable. 



side, the ends, sides and top collapse. Several cages can 

 thus be arranged on top of each other and then placed in a 

 large, dry-heat sterilizer. The cage proper is 30 cm. high, 

 38 deep and 54 wide. The feet are 12 cm. high. 



Post- Mortem Examination of Infected Animals.. 



When the infected animal dies it should be examined as 

 soon as possible. After the lapse of a few hours, especially 

 in warm weather, the body is liable to become invaded by 



