HUMAN MALE MONSTER. 223 
*¢ vi illa capillaribus tubis familiari, precipuum humoribus 
‘© motum impertiri debet.——Accedant forfan et aliz in foetu 
‘“* noftro caufe incogmtz, ipfa fortafle a colore excitata fluido- 
“« rum agitatio, aliaque.”’ 
But as to the direction in which he fuppofed the humour to 
be moved, he fays nothing, and therefore leaves us to judge of 
his opinion, from the foregoing defcription of the blood-vef- 
fels. 
To the opinions of all thefe authors, when fully confidered,’ 
we (hall find infuperable objeétions. 
Tuus, without faying in objection to that of Mery, that 
it is fo far from being certain, that there is a circulation of red 
blood between the mother and foetus, that the contrary opinion 
is the moft probable, we cannot conceive, although the anatto- 
mofes of the uterine with the placentary veflels were proved, 
that the mere impulfe of the blood in. the minute arteries 
fhould have carried the blood, not only into the trunks, but 
through all the capillary branches of the veffels of the fostus, 
and again back from thefe to the placenta, and from its umbi- 
lical arteries into the umbilical veins and veins of the uterus. 
Tue opinion of WinsLow is far more unfatisfaCtory than 
than of Mery. In the firft place, it cannot be applied to the 
montter defcribed by Mery, or to that before us, where there 
were two fets of veffels.. In the next place, WinsLow was fo 
far from tracing diftin@ly the joining of the umbilical vein 
with the veffel he calls aorta, that he defcribes it as merely 
s’adoffant with the trunk of the aorta *. 
3. AtTHouGH he repeatedly affirms, that there were no 
venous veffels in any part of the body of the montfter, yet his 
defcription of the veflels of the kidney will not, when confi- 
dered, be found to correfpond with his general affertion; for 
he defcribes a veflel which indeed he calls arterious, but which 
t began 
* See p. 588. of Mem. de |’Acad. or Note, p. 221. 
