marrow, and partly from the fourth ventricle. It is connected at its 
origin with Willis’ accessory nerves, which ascend through the great 
occipital hole from the fifth neck nerve ; these nerves _to- 
gether through the lacerated hole in the base of the skull. The ac- 
cessory nerves then separate from the eighth pair, and vanish in the 
breast, and square muscles of the shoulder-blade. The eighth pair 
then gives off branches in the neck to the tongue, top of the wind- 
pipe, and shield gland; and then descends into the cavity of the 
chest where it gives off— he: 2 
Ist. The right and left recurrent, or running back; the former __ 
rises on the right side under the chest artery, which it surrounds, _ 
and then returns upwards to the shield gland: the latter aris 
der the arch of the fountain, which it surrounds, and then as eae. 
to the food canal: Both nerves are lost in the -museles of the top 
of the windpipe and gullet. pas 
net-work, which supplies the lungs and windpipe. 
4th. Both trunks of this nerve then descend with the food canal 
and give off many little branches, which form the food canal net= 
work, from which the food canal and adjoining parts are supplied. = __ 
5th. Having passed the diaphragm, or midriff with the gallet, they. _ 
form, about the upper opening of the stomach, two stomachic net- 
works : the front is expanded upon the front surface of the st ho 
and its preater curvature ; the back, over its back surface and lesser_ 
curvature, and it transmits also branches to the liver, pancreas and 
diaphragm. ES te a 
6th. ‘The eighth pair also sends some branches to unite with the- 
great rib nerve, and thus concurs in forming the liver, spleen, and 
kidney net-works. iz 
The ninth, or tongue pair of nerves, rise from the oblong marrow, 
between the olive shape and pyramidal bodies, pass out of the skull ae 
through the joint holes, and communicate with the eighth pair and : 
first pair of neck nerves: they then proceed forwards between the ees 
jugular vein and head artery, to be distributed on the tongue and go 
bones of the tongue. ee 
Thus itappears, that the smelling, optic, and moving nerves oe 
the eye, aris@ from the brain; the pathetic, abducting and triples 
iwin, from the hinder brain, and the ear, sympathetic, and tongue 
_ nerves, from the oblong marrow. — ‘ a P 
NERVES OF THE SPINAL MARROW. 
__“Those nerves are called spinal which pass out throu igh ~ 
@inpand-sacred- nerves: i 
