XlV ADVERTISEMEN t, 



to provide for themfelves, and know what iS 

 good for them, and are detefmined to propagate 

 their fpecies. This is inftind:, and is put into 

 adion by the natural and primitive principle of 

 felf-love, or by a love of pleafure, and aver- 

 fion to pain ; producing a voluntary inclination 

 to perform certain anions, which tend to their 

 Well-being and prefervation. To the perform- 

 ance of thefe adions they are particularly 

 prompted by their prefent fenfations, by ima- 

 gination fupplying the place of memory, and 

 other caufes. The wonderful effefrs produced 

 by thefe inftinftive appetites are further to be 

 attributed to the exquifite couftruclion in their 

 bodily conformation, particularly in the ftruc- 

 ture of the various organs vrith Vvdiich they ex- 

 ecute their opeiatlons, and to the fuperior per^ 

 fedtion and acutenefs of their external fenfes, 

 by which they are quickly and diftindly in-* 

 formed of thofe qualities of objeds which moft 

 materially concern them. By this inftinft, each 

 tribe of infeds have a ftrong propenfity to re-* 

 fufe individually, and with their whole united 

 power, whatever in food or climate tends to 

 {horten their lives, or llacken their natural 

 progrefs. 



Again, every infcdt has its proper plant, or 

 tribe of plants, which it naturally requires for 



its 



