of nerves in the placenta. 71 
“ The common hypogastric plexus, after having supplied 
the body of the uterus, gives off a large nerve of considerable 
length, which clips down into the pelvis, and unites with 
numerous branches of the third sacral nerve, and smaller 
branches from the second and fourth ; a remarkable plexus 
is thus formed which contains several distinct ganglia. It 
distributes nerves to the body of the uterus, the vagina, 
bladder, and rectum, the integuments of the upper part of 
the pubes, and the muscles of the inferior outlet of the pelvis. 
A few branches pass down to communicate with the fourth 
sacral nerve, where it gives origin to the pudic nerve. These 
nerves arise from the plexus in such a way as to resemble 
the ramifications of the venae vorticosas in the choroid mem- 
brane of the eye. 
“ The difference therefore between the nerves of the human 
uterus, and those belonging to the uterus in the quadruped, 
consists in the formation of only one lateral hypogastric 
plexus, and consequently in the existence of only four nerv- 
ous centres in the latter. There appear also to be more 
ganglia in the plexiform distribution of the sympathetic 
nerve. In the seal, several large ganglia are found in the 
broad ligaments of the uterus. 
‘‘ The nerves belonging to the female organs of birds are 
distributed as follows : 
“ rhe sympathetic nerve is found close to the origin of the 
spinal nerves, protected by the double heads of the ribs be- 
tween which it runs. The spinal nerves that correspond to 
the lumbar and sacral nerves in quadrupeds emerge near 
each other, and as the sympathetic nerve communicates with 
each of them, and forms a ganglion immediately after their 
