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Nemotelus, Mufca 

 Volucella, Mufca. 



Thefe genera appear to us to be in a/ 

 great meafure like thofe which were in- 

 troduced into botany by the followers of 

 Rivinus. Paying too little regard to 

 nature, they difunited natural genera, 

 on account of the mofl: trifling diftinc- 

 tions. This made their continuance in 

 the fcience of very fhort duration ; our 

 bulineis here is not to fuppofe, but to 

 examine, what nature will allow of, and 

 what me will not. Knowledge of this 

 kind, built on opinion only, wi.ll not 

 fiand. We are therefore to look into 

 the fcience with great aCcuracy ; and 

 the Larva of the infedt, its manner of 

 changing, and other thingsof moment, 

 are to beknown, before w r e prefume to 

 form a new genus, as men of experience 

 will readily admit. Daily experience in 

 botany teaches us that none are more apt 



to 



