ir, SEMINAL VERMICULI. 309 



parts. 2. That we agree concerning the fize of 

 the body, the length, the figure, and proportions 

 of tlie appendage, will farther appear from the 

 defigns he has given of the fpermatic vermiculi 

 of man and other animals. 3. We have each dif- 

 eovered a prodigious number of bemgs in the fe- 

 men : We have remarked the fize of fome dif- 

 ferent from that of the reft : We have alfo al- 

 lowed them the fame properties, and faid their 

 motion in fwimming was ferpentine like that of 

 eels, and uninterrupted unlefs towards the termi- 

 natiern of life : that the progrefs of the vermiculi 

 in the grofler parts of the fl-uid met with great 

 oppofition. But I have obferved all this in the 

 preceding chapfer. We have both remarked one 

 fingularity, that rain water deprived the canine 

 vermiculi of motion. I have iikewife found the 

 fame elTeflt on thofe of the ram and man even 

 from other kinds of water, as dunghill, ice, fnow, 

 and rive? water. I have conftantly remarked ^ 

 that when motion ceafes, the appendage never 

 encircles the bddy, but always remains extended 

 in a ftraight line, or in one very little curved ; a 

 fa£i: obferved by Leeuwenhoeck, as appears from 

 his engravings of the vermiculi of the dog and 

 the rabbit; When he means to reprefent them 

 dead, he exhibits the appendage extended ; if he* 

 means to reprefent them alive, it is with the ap- 

 pendage curved. 



Therefore the moving eorpufeula found by me 

 U 3 ia, 



