410 ESSAYS anp OBSERVATIONS 
of the placenta adhering to the back part of 
the uterus, can be feen. 
WE fought diligently for an allantois; but 
could fee nothing that bore any refemblance 
to it. 
Tue following day, tallow diluted with 
oil of turpentine, was thrown into the umbili- - 
cal arteries towards the placenta; and fome 
of the fame materials, coloured with rad. 
anchufae, was injected into the umbilical vein. 
Tallow, diluted with oil of turpentine, 
and coloured with verdigreafe, was likeways 
thrown into the uterine veins, after its cut 
edges were all tyed. 
Tue feetus being taken out, we faw how 
far down the placenta adhered to the womb, 
as in Tas. v. fig. 2. where AA, is the low- 
eft part of the placenta, with fome of the 
membranes turned upon it;—BB, a clufter 
of finufes, which appeared where thefe mem- 
branes had been taken from;—C, the entry 
to the cervix uteri;—D, a fhare of the 
forepart of the werus turned down. 
Upon taking the wferus out of the body, 
and opening the back part of the vagina, 
there was, aS in Tas. v. fig. 3. A, a confi- 
derable part of the cervix uteri very little 
diftended ; 
