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4.1. Many hundreds of sok nown period of mineral heller P179144 in the stream of the earib, the remains of vedy and shoreg now no trore.

499. The polype is an insect of a snail of jelly-like substance. It shrinks into a round green spot, if disturbed; but, in its natural form, is a long tube, and has ahead and mouth, from which eight or ten long arms are projected to seize wormus and other inscris.

The young issue from its side in a surprising manner; but, it is the wonderful property of this ingere, that if cut into any mumber of pieces, and in any direction, each part will become # perfeet polype in itself!

It may even he turned inside out without me jury; and the dismemberent parts of one polype will unite with those of abother, and make one perfect polype !

500. After man lieg exerted his eyes to view the smallest insects, he will find, ou applying a inicroscope, other's so small, that ten thousand of them are pot equal in bulk to the smallest which he can view with his naked eye.

LAWENDOFCK tells us of insects seen with a microscope, of which 27 millions would only be equal to a mite, and four millions to a single grain of sand.

601. Vetrach of these moitoalouir las an organized body, provided with a licart, lungs, muscles, glands, arteries, and veins and with blood and other Huids passing throngli them!

Their vigour and powers of action are geniet.' mally superior even to those of larger animals,

Tlvetr length of life is also great in proportiota to their sige,

The mite makes 500 steps in a second; animaloutes, in a diop of water, swim about with as much freedom as a whale in the sea; and those that feed on the leaves of trees resemble oxen grazing in large pastures.

Wak'd hy his warner ray, the reptile young Come wing'd abroad ; by the light air upborne, Lighter, and full of soul. From every chink, Aad sporet corner', where they slept away The wintry storms; or rising from their tomber To higher lite; by myriada, forth at once, *warming, they pour; of all the varied hues, Their beauty-beaming parent can disclose, Ten thousand turins, ten thousand diferent tribes People the hlazo! To sunny waters some, Ky fatal instinct, fly where on the pool, They, sportive, wheel; or, sailing down the streama Ar natch'd immediate by the quick-eyed trout, Or darting salmon. Through the greenwood glade Some love to stray; there lodg'd, amus'd, and fed, In the freth leaf. Luxurious, others make The mead their choice, and visit every flower, And every talent herb; for the sweet task, To propagate their kinds, and where to wrap, In what wat beda, their young vet undisclos'de Employs their tender care, Some, to the house, The fold, and dairy, hungry, bend their ttights Sip round the pail, or iasie the curdling cheese On, inadvertent, from the milky stream They meet their fate; or, weltering in the bowl, With powerless wings, around them wrap, expire.

THOMSON $09. Animalcules are shaped like fish, reptiles, eels, stars, hexagons, triangles, ovals, and viroles; they have horns, probosces, &c., and although the eyes of many species are not dis

cernible, yet they move about with inconceiva ble relative velocity in the thus they inhabil, without interfering with each other.

503. HUNTER divided all animated nature into single and complicated animals. The single, are thone which possess only feeling or the powers of muscular coutractions, and the power of absorbing food, is chalk absorbis moisture, and appropriating it to nourishment.

The hydatid, found in sheep, consists only of a bag filled with water, and has no appearance of animal powers; but, whenexcited or pricked, contracts and show's iis irritability; while this vital power in supported by the nourishment which it receives through its cont.

004. From such simple animals, we ascend, through all the degrees, up to the complicated and combined powers of body and mind, in MAN!

The links are kept up, by the addition of muscles, for additional motions, by other souses, for hearing, seeing, &c.; and by various degrees of irritability in those senses.

The blood for renovation circulates through the lungs; and tor action through the muscles of the heart; secretions take place by the various glands; the contraction of the muscles move's the bones; the nervos convey the etlicct of the mental secretions to the brain ; and there produce the inscrutable powers of sensation, will, uud judgment.

008. Although animals, in general, are sufli. eiently distinct from vegetables, yet the grada

tions of nature are so minute, that many ani. mals are but slightly removed from vegetables, having not more than one or two senses; and, as in some shellfish, have not even the power of loco-motion. " Between these and men, there is a regulur succession of thai cunning and sagacity which are necessary to preserve and sustain life; yet, between man and most other animals, there is, in mental capacity, as great a difference as between some of those and vegetables,

Far as creation's ample range extends,
The scale of sensual, mental powers, ascends :
Mark, how it mounts to man's imperiat race,
From the green myriads in the peopled grass :
What inodes of sight, betwixt each wide extreme,
The mole's dim curtain, and the lynx's beam :
Of smell, the headlong lioness between,
And hoond nagacious, on the tainted green :
Of hearing, from the life that fills the flood,
To that which warbles thro' the vernal wood !
The spider's touch, how exquisitely fine !
Feels at each thread, and lives along the line :'
In the nice bee, what sense so subtly true !
From poisonons herbs extracts the healing dew:
How instinct varies in the groveling swine,
Compar'd, half-reasoning elephant, with thine!
"Twixt that, and Reason, what a nice barrier!"
For ever separate, -- yet for ever near!

POPE.

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