TREATMENT OF INJECTED PARTS. 171 



cially for injecting cold-blooded animals, but they 

 do not as a rule yield such good results as a success- 

 ful gelatine injection. 



Any of the colored gelatine that may remain over 

 can be preserved (even for a considerable time) until 

 again wanted, if the precaution is taken, after dis- 

 connecting from the pressure-bottle and allowing the 

 fluid in the canula tube to ran back, to place the 

 bottle, tubes and all, for a few- minutes in boiling 

 water, and whilst still hot to stopper up the ends of 

 the tubes with pieces of glass rod. The whole can 

 then be put away until wanted ; but it is as well to 

 heat it up now again in boiling water, to destroy any 

 germs of fungi which may perchance have entered 

 the bottle. 



