CLASSIFICATION OF AXIMALS. rMl 
The orders in this class are chiefly distinguished from each other 
by the peculiar make of the bill and feet. 
Class III, Amphibia, contains Amphibious a,mma\s, including what 
are commonly called reptiles. It is divided into four orders: 
1st. With shells over their back, and four feet; as the tortoise 
and turtle. 
2d. Covered with scales, and having four feetj as the crocodile 
and lizard. 
3d. Body naked, destitute of feet ; as serpents. 
4th. The body naked, and having two or four feet; as the frog, 
iind toad. 
Cf.Ass IV, contains Fishes, (Pisces,) natives of the water, unable 
to exist for any length of time out of it ; swift in their motions, and 
voracious in their appetites ; breathing by means of gills, which are 
generally united in a long arch ; swimming by means of radiate fins, 
and mostly covered with scales. 
Molluscous Animals. 
Class V. Molluscous animals have soft bodies without bones ; 
their muscles are attached to a calcareous covering called a shell, 
which is supposed to be formed by the secretions of the animal. 
This" class are destitute of most of the organs of sense ; the nauti 
lus and cuttle-fish are of the highest order of molluscous aninials 
The oyster and clam are destitute of heads; they have a shell o 
two pieces, which are therefore termed bi-valved. 
Articulated Animals. 
We proceed next to those animals called Articulated ; these have 
jointed trunks, and mostly jointed limbs. They possess the faculty 
of locomotion, or changing place ; some have feet, and others are 
destitute of them ; the latter move by trailing along their bodies. 
Class VI, Annelida, contains such animals as have red blood, 
without a bony skeleton ; bodies soft and long, the covering divided 
into transverse rings ; they live mostly in water ; some of them se- 
crete calcareous matter, which forms a hard covering, or shell ; as the 
earth or angle-worm, and leech. 
Class VII, Crustacea, contains animals without blood, with jointed 
limbs fastened to a calcareous crust ; they breathe by a kind of gills. 
Class VIII, Arachnida, contains spider-like animals, without 
blood, or horns with jointed limbs. They breathe by little openings, 
which lead to organs resembling lungs, or by small pipes distribiif'^'^ 
over the whole body; these do not pass through any important 
change of state, as insects do; they have mostly six or eight eyes, 
and eight feet, and feed chiefly on living animals ; examples of this 
class are the spider and scorpion. 
Class IX, Insecta, or insects, without blood, having jointed limbs 
and horns; they breathe by two pipes, running parallel to each 
other thi ough the whole body; they have two horns ; they are mostly 
winged, naving one or two pairs; a few are without wings; mostly 
with six feet. They possess all the senses which belong to any class 
of animals, except that of hearing. 
The winged insects pass through several changes or metainoi 
phoses. The butterfly is first an egg j this, when hatched, is long 
and cylindrical, and divided into numerous rings, having many short 
iegsjaws, and several smail eyes; this is the larva, or caterpillar. 
Class 3d— Class 4th — Molluscous animals — Articulated aniraala — Class fitb— Clasa 
7ih--ClHsa8th — Class 9th— Metainorplioses of insects. 
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