OS THE PHILOSOPHY 



bodies, and to convey the fenfation of fmelliiig. Henee the 

 probofcis of infedls is an inftrument which ferves them for a 

 mouth, a nole, and a wind-pipe. 



The upper part of the trunk or body of infedlis is called 

 the thorax, and the under part the abdomen or belly. The 

 abdomen contains the ftomach and other vifcera. It con- 

 fifts of feveral rings or fegments, and is perforated with fpi- 

 racula, or tubes, which fupply the want of lungs. The ab- 

 domen is terminated by the tail, which, in fome infedls, is 

 nrmed with a fting, a foreceps, abriftle, or a kind of claw 

 2ivith a moveable thumb. 



The legs are compofed of three parts, connected to each 

 other by joints, andreprefent tlie thighs, fhanks, ankles, and 

 feet of larger animals. 



The wings of infedls are fo diverfified in number, confift- 

 ence, and colour, that Linnaeus has made them the founda- 

 tion of the feveral orders or divifions into which he divides 

 this numerous clafs of animals. Some infe6ls are furniflied 

 with four, and others with two wings, and fome of them are 

 entirely deflitute of thefe inftruments of motion. 



The four-w^inged infedls are arranged into five orders. 

 The ji?r/? order Linnaeus diftinguifhes by the name of coleop^ 

 fera^ or thofe infedls whofe upper pair of wings confift of a 

 hard, cruftaceous, or horny fubftance. Thefe cover and de- 

 fend the under pair, which are of a more foft and flexible 

 texture. This order comprehends the whole of what is prop- 

 erly called fcarabaeiy or the beetle tribe. Like other wing- 

 ed infe£ls, all the beetles live for fome time in the form of 

 caterpillars, or grubs. 



As a farther confirmation of the connection of manners 

 with form and flru6ture, it is here worthy of remark, that 

 the fame animals, when in the ftate of caterpillars, live in a 

 different manner, and feed on fubftances of a very different 

 l;ind from thofe they confume after their transformation into 



