CLASSIFICATION OF AXIMALS. JMI 



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 animals, 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 feet; 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, 

 and toad. 



Class 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. Molhiscous 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 animals. 

 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 critst ; they breathe by a kind of gills. 



Class VIII, Arachnida, contains spider-hke animals, without 

 blood, or horns with jointed limbs. They breathe by little openings, 

 which lead to organs resembling lungs, or by small pipes distributed 

 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 Uving 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 through the whole body ; they have two horns ; they are mostly 

 winged, having one or two pairs ; a few are without wings ; mostly 

 with six fe^t. They possess all the senses which belong to any class 

 of animals, except that of hearing. 



The winged insects pass through several changes or metaniOi- 

 phoses. The butterfly is first an egg; this, when hatched, is long 

 and cylindrical, and divided into numerous rings, having many short 

 legs, jaws, and several small eyes; this is the larva, or caterpillar. 



Class 3d— Class 4th— Molluscous animals— Articulated animals— Class 6th— Class 

 7th — Class 8tli — Class 9th — Metamorphoses of insects. 

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