192 THE naturalist's guide. 



dition it is subjected to the heat of a small oven, be- 

 neath which is an alcohol-lamp. The specimen is 

 thus dried slowly, and moulded into a natural form. 

 Then by inserting a copper wire it can be mounted. 

 The smaller larvae, as well as the pupa, should be placed 

 in alcohol. The latter, if covered with a hard shell 

 may be removed after a few days, and dried. 



Casts may be taken of the larger larvae, and colored 

 as describe dunder " Eeptiles and Fishes.'* 



