72 
Sir Everard Home on the existence 
appearance from the vertebral foramina, there is an almost 
uninterrupted ganglion of considerable length ; from which 
numerous filiments go off to supply the oviducts. Others 
run upwards and are distributed on the ovaria. 
“ Near the termination of the oviduct in the cloaca a plexus 
is formed, nearly similar to the lateral hypogastric plexus in 
quadrupeds, which is distributed in a corresponding manner 
to the oviduct and cloaca. There is also a similar pudental 
nerve. 
“ Fewer ganglia are formed near the aorta than in quadru- 
peds, and scarcely any branches are sent from the common 
hypogastric plexus to the oviduct. 
“ In the frog, as there is no proper sympathetic nerve, 
the abdominal viscera are supplied directly from the spinal 
nerves. These soon after they emerge from the vertebral 
canal, become slightly enlarged : this does not deserve to be 
called a ganglion. From each of the spinal nerves in the 
lower part of the back and loins, a small nerve is given 
off, which takes a direction towards the centre of the bodies 
of the vertebras, where they unite with each other, and with 
the corresponding nerves of the opposite side. By this union 
a flat nervous web is formed, which stretches across the aorta 
and extends downwards into the pelvis : this is analogous to 
the splanchnic plexus in hot blooded animals. 
“ From the upper surface of this plexus many branches run 
upwards towards the intestines and kidneys, but the greater 
number are distributed on the ovaria. 
“ The lumbar nerves on each side give off several branches, 
which pass at once into the oviduct. The last lumbar nerves 
pass down upon the surface of the psoae muscles, and near 
