HUMAN MALE MONSTER. 223 



" vi ilia capillaribus tubis familiari, praecipuum humoribus 



** motum impertiri debet. Accedant forfan et aliae in fcetu 



" noftro caufae incognitae, ipfa fortaffe 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 considered,' 

 we (hall find infuperable objections. 



Thus, 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 anafto- 

 mofes of the uterine with the placentary veffels were proved, 

 that the mere impulfe of the blood in the minute arteries 

 mould have carried the blood, not only into the trunks, but 

 through all the capillary branches of the veffels of the foetus, 

 and again back from thefe to the placenta, and from its umbi- 

 lical arteries into the umbilical veins and veins of the uterus. 



The opinion of Win slow is far more unfatisfactory than 

 than of Mery. In the fir(l place, it cannot be applied to the 

 monfter 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 diftinctly the joining of the umbilical vein 

 with the vefTel he calls aorta, that he defcribes it as merely 

 s'adojfant with the trunk of the aorta *. 



3. Although he repeatedly affirms, that there were no 

 venous veffels in any part of the body of the monfter, yet his 

 defcription of the veffels of the kidney will not, when confi- 

 dered, be found to correfpond with his general affertion ; for 

 he defcribes a veffel which indeed he calls arterious, but which 



began 



* See p. 588. of Mem. de l'Acad. or Note, p. 221. 



