lU ' SEMINAL VERMICULI. 3I9 



very long and painful examination, feemed to 

 perceive an indiftin6t obfcure fermentation in the 

 fluids. A few could fee the body or corpufcu» 

 lum of the vermiculi, but were unable to diftin- 

 guifh the appendage : and very few could per- 

 ceive their form and all their motions. Thefe 

 laft, indeed, were well accuftomed to fludy mi- 

 crofcopical obje£ts, and might reafonably be call- 

 ed profeflional obfervers. Let thofe who deny 

 the exiftence of fpermatic vermiculi endeavour to 

 enter this clafs, and pradife on minute obje£tSj 

 and I aflure them, if they repeat their experi- 

 ments on the feminal fluid, they will fee ver- 

 miculi as I and Leeuwenhoeck, with many other 

 naturalifls, have feen long before. Then, if 

 they chufe to communicate their obfervations, 

 they will enjoy one advantage : if their previous 

 publications excite the compaliion of the learned, 

 their future works may perhaps merit an eulo- 



ciu?^ 



