of graminivorous and carnivorous Animals. 175 
stance of its contents not being completely discharged, by the 
first effect of an emetic, which only empties the cardiac por- 
tion: the contraction preventing the pyloric portion from being 
emptied till the violence of the straining ceases, at which time 
relaxation takes place. 
It may also enable us to account for many symptoms that 
occur in the diseases of this organ, particularly the violent 
cramps, to which it is liable : as from the situation of the pain 
they probably arise from preternatural contractions of these 
muscular fibres. On the other hand, the indigestion met with 
in debilitated stomachs may proceed from this part having lost 
its proper degree of action, and therefore the food is not re- 
tained in it so as to be acted on by the different secretions. 
This however is not the place to enter into these subjects ; 
the object of the present investigation has been to collect 
facts in comparative anatomy, that may throw light upon the 
conversion of the food into chyle, and to abstain as much as 
possible from all matters of opinion; — no easy forbearance in 
going over ground, that has given rise to so many theories, and 
which the mind cannot contemplate, without forming a variety 
of conjectures. 
The stomach of the truly carnivorous quadruped appears to 
be made up of the same parts as the human. In the lynx, 
the different structures are more strongly marked, the solvent 
glands are more conspicuous, the pyloric portion is more 
bent, which renders the division between it and the cardiac 
more distinct, the muscular coats of the pyloric portion are 
much stronger, and on its internal surface, glands are very 
obvious which are not to be observed in the human. 
The stomachs of some carnivorous animals have glandular 
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