106 MAMMALIA. 
Tricuecuus, Lin.* 
The Morse resembles the Seal in its limbs, and the general form of the 
body, but differs widely from it in the teeth and head. There are no in- 
cisors nor canini in the lower jaw, which is compressed anteriorly to pass 
between two enormous canini or tusks, which issue from the upper one, 
and which project downwards, being sometimes two feet long, and ofa 
proportionable-thickness. The enormous size of the alveoli, requisite for 
holding such tremendous canini, raises up the whole front of the upper jaw, 
giving it the shape of a huge inflated jowl, the nostrils looking upwards, 
and not terminating the muzzle. The molars are all short, obliquely 
truncated cylinders; there are four of them on each side, above and be- 
low, but, at a particular age, two of the upper ones fall out. Between the 
canini are two incisors, similar to the molars, which most authors have not 
recognised as such, although they are implanted in the intermaxillary bone. 
Between these again, in the young animal, are two more small pointed 
ones. 
The stomach and intestines of the Morse are very similar to those of 
the seal. It appears that the fucus constitutes part of its food, along with 
animal matters. One species only is as yet ascertained, the 
Trich. rosmarus, L+.; Buff. XIII. liv.; and better, Cook, Voy. 
Ill. (The Sea Cow). It inhabits the Arctic seas, surpasses the 
largest ox in size, attains the length of twenty feet, and is covered 
with a short yellowish hair. It is sought for on account of its oil 
and tusks; the ivory of which, although rough grained, is employed 
in the arts. The skin makes excellent coach braces f. 
ORDER IV. 
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MARSUPIALIA. 
So many are the singularities in the economy of the Marsupialia, or 
pouched animals, as they are termed, which we formerly placed at the end 
* Trichechus, from Tria (hair), a name invented by Artedi for the sea cow. 
t+ Shaw, however, suspects, that there may be two, distinguished by the greater or 
less size of their trunks, and by their being more or less convergent. 
{ Previous to my arrangement, the Lamantins and Dugongs, much more nearly 
allied to the Cetacea, were very properly united with the Morses. 
ranged along the shores, and the oil is afterwards put into casks. The Frenchmen 
state that the oil which they saw prepared by the English sailors was clear, and free 
from that rancid odour which never can be removed almost from whale and fish oil, 
and that it appeared to them particularly useful as a lamp oil, in consequence of 
its sending forth no disagreeable smell, and also because a given quantity fed the 
lamp for a longer period than the same amount of other oils used for the same pur- 
pose. The Sea Elephants feed on cuttle fish and sea weed, and stones and gravel are 
found in their stomachs; very commonly, too, huge calcareous concretions, which, 
when seen by those who open them, excite astonishment as to the possibility of their 
being contained within a cavity apparently so small.—Ena. Ep. 
