424 ESSAYS anv OBSERVATIONS 
of the diaphragm during Jabour-pains, and 
that, by being turned, ‘its feet may act wiih 
advantage, by puthing againft the fundus: tt 
teri, to affift the delivery. 
Tue enlargement of: the veins of the 
womb during pregnancy, is really furprifing, 
as may be judged by obferving their tranfverf 
fe&tions in their collapfed ftate, as reprefent- | 
ed in the cut edges of the womb; fee Tas, 
vand vi. and by the fize of the fpermatic 
veins, in TAB. Vii. fi. 5. J ought however 
to obferve, that the trunk of the vein is here 
reprefented lefs thanit thould have been; for 
when the womb was -ciit out of the body, 
forhe of the injection was, by accident,’ pufh- 
ed out of the veins, before the figure was 
made. The fituation of this vein and aftery, 
may let usfee, how ealily Arantins * and o- 
ther anatomifts, before the inje@ing art was 
found out; might imagine the artery entered 
into the vein; that the arterious and venous 
blood might be blended together before they 
reached the womb. Injections plainly thew, 
there is: nocfuch uncommon anaftomofis be- 
tween the vein and artery, | 
THE 
* ARANTIvs de foetu, cap. ili. P= 7s 
