C 19+ ] 
abound. As the former opinion does not appear to 
have any certain fadt to fupport it, we may well fuf- 
pedl an infufficiency in the caufe to produce the elfeft 
affigned j but, fuppofing it adequate to the produc- 
tion of one generation, who can conceive a fubtile 
fpirit to remain in force for ten generations, and 
that through all the various feafons of the year ? 
With regard to 'the latter, I mud; obferve, that the 
animalcules of Leeuwenhoek being compared with 
Malpighi’s firft rudiments of the chick, their refem- 
blance is not fo ftriking as to afford me the lead: 
convidlion : but Ihould we allow thefe animalcules 
requifite to produce the firft generation, how then 
are the fubfequent nine generations produced with- 
out them? Not being able lo anfwer thefe queries 
myfelf, nor expedting them to be readily anlwered 
by others ; it feems moft prudent to obferve with 
diligence what nature does, without being over anxi- 
ous to difeover by what means. Let us reft fatisfied 
in admiring the wonderful effedfs of generation, 
while we refer the primary efficient caufe to the e- 
lernal will and power of an Almighty Creator, 
Me- 
