202 THE COLLECTION OF MATERIAL 



Small animals (rabbits, guinea-pigs, etc.). 



It is impossible to use a catheter on these small animals and the only way 

 to collect the urine in the male is to let it flow into a sterile tube or Pasteur 

 pipette. The animal should be fixed on its back and the emission of urine is 

 easily provoked by laying towels wrung out in very cold water on the abdomen 

 and loins. 



15. Stools. 



Stools for bacteriological examination should be collected in a sterile 

 vessel and care must be taken that they are not mixed with urine. 



When solid, cauterize the surface with a red-hot iron rod and collect some 

 of the material from the centre. When liquid, take up the quantity required 

 with a Pasteur pipette or platinum loop. 



