190 NOTEBOOKS AND COLLECTIONS 



Orthopterous insects earwigs, cook- 

 roaches, grasshoppers, and locusts are set 

 after the fashion of beetles, except that, if 

 pinned, the pin is inserted through the centre 

 of the thorax. Only a few specimens can be 

 * carded.' Care must be taken to properly 

 exhibit the legs. Grasshoppers and locusts 

 are best set with the long hind legs drawn 

 out straight. If you have more than one 

 specimen of the winged sorts, one should be 

 set with the wings expanded, another with 

 the wings closed. 



In determining species it is necessary, in 

 many cases, to examine anatomical details. 

 For this purpose a strong lens is required. It 

 is advisable to learn to dissect the bodies of 

 spare specimens. It is quite easy to do this, 

 and full instructions are given in the books. 

 When it is desired to examine the number 

 and ramifications of the nervures in the wings 

 of butterflies, without damaging the scales, 

 these should be damped with benzine. A 

 camel's-hair brush charged with benzine is 

 applied gently to the root of the wing next 

 the body, and the spirit spreads rapidly 

 over the surface. No rubbing must be used. 



