53 SEMINAL VERMICULI: . m ; 
fume one very different, or that the firft change 
will be fuch as to prevent them being recognifs 
ed, for then the internal ftru€ture muft alfo be 
changed ; and this is as much as to fay, that af- 
ter their former organs were wholly or partially 
changed, they fhould produce new ones, which 
would rather be a creation than a change. 
The feminal vermiculi not only differ from ani- 
malcula in fhape, but I have likewife {hewn that 
they are of a nature and conftitution effentially 
different. Such are the differences mentioned 
in the former chapter and that preceding it, but 
omitted here to avoid repetition. wig 
M. Bonnet fuggefts a moft ingenious experi- 
ment, to try whether feminal vermiculi. will 
live in infufions, and infufion animalcula in fe- 
minal fluids. I had already done this in part} 
but, on tran{mitting the animalcula of putrid in- 
to recent femen, and the vermiculi of recent fe- 
men into that which was putrid, the whole ani- 
malcula and vermiculi perifhed. Yet, to fatisfy 
the curiofity of my illuftrious friend, inftead of 
corrupted femen,; I ufed vegetable infufions, and 
took the precaution to make them of the fame 
heat as femen in the body of the animal, and 
that the femen where the animalcula were put 
fhould have the temperature of the atmofphere ; 
however‘ their death could never be prevented. 
There was a little difference: the vermiculi 
perifhed 
