Microscopical Essays. 



slain would be broken, the creature unhappy, and man moft 

 ©fall. 



AmongrV infers, fome are produced fiich as they will be 

 during their whole lives ; others come forth inclofed in an egg, 

 and are hatched from this in a form that admits of.no variation,; 

 many come into the world under a form which differs but little 

 from that which they have when arrived, at an age of maturity ; 

 fome again aflume various forms, , that are more or lefs remote 

 from that which conftitutes their perfect ftate ; laftly, fome go 

 through part of thefe transformations in the belly of the mother, 

 and are born of an equal, fize with their parent. 



By thefe various changes, a fingle individual unites within itfelf 

 two- or three different fpecies, and becomes fucceffively the in- 

 habitant of two or three worlds : . and how great is the diverfity 

 of it's operation- in thefe various abodes ! Let us alfo confider 

 what riches we mould! have been deprived of, if. the filk-worm 

 had been horn in. it's perfect ilate. 



Since it has been ffiewn that the larva or caterpillar is really 

 the moth, crawling, eating, and fpinning, . under the form of the- 

 worm, and that the pupa is only the moth fwathed up, it is 

 clear that they are not three felfs, or three perfons, but that the 1 

 fame individual feels, taftes, fees, and a6te by different organs, at; 

 different periods of it's life,, having; fenfations and wants at one 

 time, which it. has not at another ; thefe wants and fenfations 

 always bearing a relation to the organs which excite them. 



