Il. SEMINAL VERMICULI. 44 
parts, which become two animals fmaller than the 
firft: but we had to learn whether this mode of 
propagation could happen with animalcula fimilar 
in fize to feminal vermiculi. Several {cores divided 
tranfverfely before my eyes ; and the divifion or 
propagation continuing feveral days, the feminal 
fluid, which had become exceflively feetid, now 
teemed with life. But the number of thefe, as 
well as of the cylindrical animalcula, gradually 
diminifhed, in the fame way as the numbers of 
infufion animalcula decreafe ; and on the twenty 
firft day, all had difappeared. There only re- 
mained an univerfal ob{cure fermentation of the 
femen in no particular direction, but the feminal 
molecules were tumultuoufly driven about to 
every fide. Ewas not long in perceiving that 
this irregular agitation was occafioned by a mul- 
titude of moft minute animalcula concealed in the 
femen, which their courfe had put in motion ; and 
of this there was complete evidence by dilating 
the femen with water, as they were then accu- 
rately difcerned, appearing about half the fize of 
vermiculi. 
The phenomena difcovered in the femen of the 
horfe were analogous to thofe in the human fe- 
men(1). The vermiculi lived feven hours, and 
then were precipitated to the bottom, where they 
remained 
(2) 26 July, The thermometer 88°. 
