H/ SEMINAL VERMICULL 49^ 



for the moft part remained with their appendages 

 extended in a ftraight line. 



Thefe experiments were repeated on other five 

 dogs, and the refults found perfe<Elly alike. 



If between the human and canine corpufcula 

 no difference has been difcovered, neither has 

 any been feen in the rabbit, except that the body 

 and appendage are a little lefs. Though I ob- 

 tained the fluid in fummer by fpontaneous emif- 

 fion, their motion did not continue half an 

 hour : and, repeating the obfervation in winter, 

 they ceafed to live in ten minutes. 



Nine hours after a ram was killed, I opened 

 the tefticles, and exprelTed the fluid into a watch 

 glafs ( I ). All the corpufcula were motionlefs : 

 they were larger, therefore more eafily feen than 

 thofe of the dog or man. 



In the feminal fluid of a living ram, all the 

 corpufcula were in motion (2). The oval part 

 or body of each corpufcle fometimes injmerfed 

 itfelf in the fluid and efcaped the eye, and fome- 

 times came to the furface. Their properties re-^ 

 fembled thofe of others, if we add a certaia 

 gentle vibration and a little more activity. Whert 

 the corpufcle contrafted itfelf, the appendage 

 •y^as Jefs curved. The duration of motion was 



(i) M^y 10, The thermometer 66'*= 

 (2) Jun? i8, The thermompt,^r 6^°, 



