I 8 ] 



fulphur had been put, and by gradually heating 

 the bottle till an exhalation of the fulphur 

 takes place, when the infect inftantly dies, with- 

 out injuring its colors or plumage. 



The beft method of having the moft perfect 

 butterflies, is to find out, if poflible, the larva or 

 caterpillar of each, by examining the plants, 

 fhrubs, or trees they ufually feed upon, or by 

 beating the fhrubs and trees with long poles, 

 and thereby making the caterpillars into a meet 

 fpread underneath to receive them to put them 

 into boxes covered with thin canvas, gauze, or 

 cat- gut, and to feed them with the frefti leaves 

 of the tree or herb on which they are found ; 

 when they are full grown, they will go into the 

 pupa, or chryfalis ftate, and require then no 

 other care, till they come out perfect butterflies, 

 at which time they may be killed, as before 

 directed. Sometimes thefe infects may be found 

 hanging to walls, pales, and branches of trees, 

 in the chryfalis ftate. 



Moths might likewife be procured more per- 

 fect, by collecting the caterpillars, and breeding 

 them in the fame manner as butterflies. As 

 the larvas or caterpillars cannot be prefervecl dry, 

 nor very well kept in fpirit, it would be fatis- 

 factory if exact drawings could be made of them 

 while they are alive and perfect. It may be 

 neceflary to obferve, that in breeding thefe 

 kinds of infects, fome earth ihould be put into 

 t ie boxes, as likewife fome rotten wood in the 

 corners-, becaufe, when the caterpillars change 

 into the pupa, or chryfalis ftate, fome go into 

 the earth, and continue under ground for many 

 months before they come out into the moth 

 ftate j and fome cover themfelves with a hard 



fhell. 



