SENTIENT PRINCIPLE, a 
appear to be the more perfect. It requires the im- 
agination to be severely disciplined by the con- 
troul of the reasoning powers, and the authority 
of analogy, to yield to the opinioa, that the clum- 
sy inert shapeless oyster is more intelligent than 
the frugal bee, the provident ant, and the revenge- 
ful wasp. | 
Among this division of animals, we discover 
instincts, which guide their actions like the wisdom 
of sages. Butas they have no brain, we cannot 
ascribe to them any of those faculties of mind, 
which seem to be lodged ne where but in that or- 
gan. 
IV. VERTEBRAL ANIMALS. 
Animals of this division are furnished with the 
appendage, at the anterior extremity of the medal- 
la spinalis, denominated the brain. ‘'This appen- 
dage consists of fibrous fascicles, radiating in pairs 
from the end of the medulla spinalis, and termina- 
ting at the inner suriace of the cranium, and inve- 
loped in a soft ash-colored medullary substance. 
‘These fascicles are few in number in the class of 
jish, more in the class of amphibious animals, 
more still in birds, and most of all in the class 
mammatia, or in that class in which the young are 
nourished with the milk of the dam. Experience 
teaches us, that the sagacity of animals increases 
as we ascend the scale of increased fascicles.— 
The lizard and snake are more sagacious than 
fish ; the bird more sagacious than lizards and 
snakes ; the dog and horse more sagacious than 
birds. u 
In ascending the scale of orders in the class 
mammalia, we find the increased number of cere- 
Q* 
