[ *98 ] 
their internal Structure with all the Attention ima- 
ginable j but found nothing there except offeous 
Fibres, ifluing from the Centre towards the Super- 
ficies ; there was not the leaft Appearance of an Embryo, 
nor of its Image. 
One muft have an Imagination extremely prepof- 
feffed to perfuade one’s felf, that there is an organized 
Body in the Liquid contained in thofe Eggs ; Or, it 
requires a very particular Natural Philofophy, to pre- 
tend to demonftratej that a bare Vapour (more fubtile 
than any the mofl: fpirituous Vapours we know of) 
could, by its fimple Touch or Fridion, produce an 
organized Body, where there was none. 
The Generation of Mankind as well as of Brutes 
by the rneans of the Animalcula, which are obferved 
in the Semen of Males, feems more analogous to all 
that we fee Nature do for the Produdion and Multi- 
plication of the Vegetables. There needs no Imagin- 
ation for forming to one’s felf an Idea of it. Each 
Animalculum is an Embryo, is a fmall Animal of the 
fame Species with that which harbours it : As foon as 
it finds itfelf difengaged from the Confinement in 
which it was, and in a Place where it meets with, a 
Humour proper for its Vegetation, and Expanfion, it 
takes Root there, it fwells like a Corn newly put 
into the Earth, it fpreads itfelf, its Members fhape 
themfelves, and by degrees take more; SWfiug^h and 
Confiftence, its Parts gro,w longer,, and, difentangle 
themfelves, as it were, from all thofe Plaits and Folds 
in which they were confined beforCj and Embryo 
becomes a Foetus. 
lown, that the immenfe Number oi AnimAcula, 
which are obferved in the Seminal Liquid of Man, 
feems 
