( ) 
become gradually fo exquifitely fine, that the Blood, 
which pafTes thro’ them, can exhibit no red Colour to 
our Eyes ; fo that there is no tracing them when entring 
into the VefTels that return the Bipod back to the 
Heart, except in living Animals, where one may fee 
the Blood enter into the returning VefTels. Before the 
Butcher gave me this Uterus, he fqueez’d it betwixt 
his Fingers, and told me that he could feel nothing in 
it ; and this I believe he had done feveral times before, 
by which means he tore off the VefTels by which the 
Foetus was faflen’d to the Uterus ; which I fuppofe 
was the occafion that, upon opening the ^te- 
rus^ the Foetus with its Coverings came fb eafily 
forth. 
I alfb took a Draught of the Tuba Falloplana. See 
Ftg. ^. M N O P. At P, is the imaginary Orifice, 
which is thought to fiick the Egg from the Ovarium^ 
according to the old abfiird Notion at M is fliewn 
where the Tuba increafes in Bignefs, and at Q_ R 
the flefliy Subfiance, which I cut away from the T)te- 
rus. I then had alfb cut off the fo call’d Ovarta^ and 
the pretended Ova^ which latter were much too big to 
think that they could pafs upon Conception thro’ the 
Tuba Falloptana. I therefore took the length of the 
Foetus with a Pair ofCompafTes, and meafur’d it upon 
a divided Brafs Rule, and this I did alfo as to its 
Breadth ; I then took the middle Number between 
thefe, and multiplied it twice by itfelf, to bring it to a 
Cube Number. I next took the Length of the Axis of 
^xsOvum^ as it lay in the Ovarium inclos’d in its Mem- 
branes, and taking the Cube of that length, and divi- 
ding one Cube Number by the other, I found that fucli 
an Ovum was about feven times bigger that the Foetus, 
notwithflanding it had had near five Days Growth. I 
fiie\v’d this Foetus, with its Covertures, to two Phyfi- 
C c 2 cians 
