102 ZOOLOGY. 
strictly herbivorous. To this order belong the families Camelide, con=- 
taining the camel and dromedary of the old world, and the lama, alpaca, 
&c., of the new; Camelopardide, containing the camelopard or giraffe 
alone ; Cervide,t containing the numerous species of deer; Antilopidae, 
containing the numerous species of antelope; Bovide,* containing oxen, 
buffaloes, bisons, &c.; and Capride,? containing sheep and goats. It will 
be seen that many of the animals most useful to man belong to this 
important order. 
The Cetacea* all inhabit the ocean, and have a fishlike form, but, unlike 
fishes, the tail is placed horizontally, so that they have great facility in 
diving and in ascending to the surface of the water, which they are 
under the necessity of doing very often, in order to breathe. They are 
as careful of their young as any land mammals. The largest whales 
sometimes attain a length of seventy or eighty feet, yet the food of 
these great animals consists entirely of molluscs and other small marine 
creatures, taken into the mouth along with floods of water, which soon 
afterwards escapes, the food having been sifted from it by the plates and 
fibres of whalebone, with which the great cavity of the mouth is filled. 
Other Cetacea, however, have no whalebone, but are furnished with teeth, 
and prey on fishes, of which we have an example in the porpoise of the 
British coasts. Two or three species of Cetacea differ entirely from the rest, 
in being herbivorous and having teeth like those of ordinary herbivorous 
quadrupeds. Such are the Dugong® of the Eastern Archipelago, and the 
Manatee or Lamantine of the West Indies. Their food consists partly of 
sea-weeds and partly of the luxuriant herbage on the banks of tropical 
estuaries, on which they browse when the tide enables them to reach it. 
We have not attempted to point out the many and various uses of the 
Mammalia ; nor have we been able, in almost a single instance, to allude 
to the beauty or peculiarity of their forms, to their habits, their intelli- 
gence, their affections, their capacity for domestication, and the like. It 
is a wide field which opens out before the student, who will everywhere 
see more and more to call forth his admiration of the Creator’s wisdom 
and goodness, 
1 Latin cervus, a deer. 4 From Latin cete, a whale. 
2 From Latin bos, bovis, an ox. 5 See bottom of page 106. ’ 
» 3% From Latin capra, a goat. 
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