IL SEMINAL VERMICULI. 32I 



a double motion, ofclllation, and progreffion, 

 ' In two or three hours the fcminal matter acquir- 

 ed greater fluidity : the filaments difappsared ; 

 the number of corpufcula increafed ; the threads 

 contrafted ; ofcillation relaxed ; and progreffive 

 motion increafed. In five or fix hours, the cor- 

 pufcula, having lofl the threads, refembled ani- 

 mals more than ever ; not only becaufc their 

 quicknefs in fv/imming increafed, but becaufe 

 their courfe was directed to every quarter. The 

 fize and figure of feveral feemed to change. In 

 •twelve hours, the adivity of the corpufcula was 

 great, and fome revolved upon their axis j others 

 changed from an ovular to a globular figure, un- 

 der the obferver's eye. Several divided afunder, fo 

 that one formed two. After one day, the num- 

 ber diminillied j and on the third, none were to 

 he feen. 



In other femen, which appeared entirely fila- 

 mentous, the ovular corpufcula did not proceed 

 from the filaments, but thefe dividing were meta- 

 morphofed into corpufcula. They were embar- 

 raifed by a thread : the longer it \v:v-, the more 

 it impeded their motion ; but it gradaally Oiori- 

 ened, and was at Lift completely deftrpyed. — 

 Their figure then refembled that of infufion ani- 

 malcula : they fwam with a progrelfive motion, 

 though the thread at firil confined them to fim- 

 pie ofcillation. 



Vol. I. Z Biifoij 



