THE 
VETERINARIAN. 
VOL. VII, No. 74.] FEBRUARY, 1834. [New Series. No. 14. 
MR. YOUATT’S VETERINARY LECTURES, 
DELIVERED AT THE UNIVERSITY OF LONDON. 
Continuation of LECTURE XXXYIIL 
The Divisions of the Nervous System* The Animal Nerves of 
pure Sensation and pure Motion . 
Divisions of the Nervous System .—One division is plain 
and palpable— the animal and the organic —that which is con¬ 
cerned in the conveyance of impressions to the brain, and voli¬ 
tions to the muscles ; and that which is connected with respiration, 
circulation, digestion, and life itself. The first six of the cere¬ 
bral, the eighth (portio mollis), and the twelfth (the lingualis), 
and all the spinal nerves, are those of animal life. All the others, 
except part of the seventh (portio dura), are nerves of organic 
life. The animal nerves admit of a simple subdivision into 
those of pure sensation , concerned alone in transmitting im¬ 
pressions to the brain, as the first, second, and eighth ; or pure 
motion , conveying the volitions of the mind ; as the third, fourth, 
sixth, and twelfth (lingualis)—or, in accomplishing both pur¬ 
poses, as the fifth pair within the cranium and all the spinal 
nerves. The division of the organic nerves is not so evident ; we 
have, however, plainly enough the simple motor-organic nerve 
in the ninth (the glosso-pharyngeus), the eleventh (the spinal 
accessory), and the phrenic—and we shall cautiously inquire 
whether we do not find it also in the tenth (the par vagum), and 
the chemical and vital one in the ganglial nerve ; while, plainly 
enough, the seventh pair occupies a neutral ground, or belongs 
both to animal and organic life—it is both the voluntary and the 
organic motor nerve of the face . When we have made ourselves 
masters of this theory of the origins and functions of the nerves, 
we shall not have much difficulty in unravelling many of their 
anastomoses, and comprehending the wise and benevolent pur¬ 
poses that are accomplished by them. 
We will commence with the animal nerves, and, first of all, 
with those of pure or peculiar sensation. 
The Olfactory, or First Pair of Nerves .—The nerve which 
VOL. v If. i 
