236 



ZOOLOGY. 



flat ; it should then be cut into thin slips, which is easiest 

 done with a fine saw, screwing the cork in a vice, this done, 

 the surfaces should be smoothed either with a fine rasp or 

 file, and finally with pumice stone. 



The cork is to be glued to the top and bottom of the 

 boxes, and should not be less than one sixth of an inch in 

 thickness ; and the boxes so deep as to leave a space of 

 half an inch between the heads of the pins, when stuck 

 in the top and bottom, if they are of less depth than 

 this, they can only be used for small Insects, or else 

 may have the cork only at the bottom, all the pocket 

 boxes should have some camphor enclosed in a piece of 

 thin cloth fastened within, as the effluvia exhaled there- 

 from tends to sfupify the Insects, and renders them less 

 liable to injury from fluttering. 



When any Insect is caught the Net should be carefully 

 opened, and the Insect laid hold of gently by one of its 

 Antennae or horns, and again placed between the thumb 

 and finger, in which position it should be held, while a 

 pin (proportioned to the size of the Insect,) is passed 

 through the upper part of the thorax or back, the insect 

 is then to be placed in the pocket box, and the pin thrust 

 sufficiently far into the cork, to prevent its being shaken out 

 in walking. The next operation is to place it in a natural 

 position ; as though the Insects may by the foregoing 

 methods, be caught in an uninjured state, something further 

 is necessary to make them appear to advantage; this is 

 called setting, and is done in the following manner : the In- 

 sect being stuck through with a pin of a suitable size, is to 



