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Skilful provisions are made against the various contingencies likely to occur in action. A wheel may be shattered by the enemy's shot, and the gun thereby disabled for the moment: this accident is met by supporting the piece upon a handspike, firmly grasped by one or two men on each side,

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according to the weight of the gun, whilst a spare wheel, usually suspended at the back of "the tumbril," or ammunition waggon, is obtained, and in a few moments made to remedy the loss, as represented above.

The extraordinary rapidity with which a gun can be dislodged from its carriage, and every portion of its complicated machinery scattered upon

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the ground, is hardly to be believed unless witnessed; but the wonder is increased tenfold, on seeing with what magical celerity the death-dealing weapon can be put together again. These operations will be readily understood by an examination of the Illustrations. In that at the foot of page 175 the cannon is lying useless upon the earth; one wheel already forms the rude resting-place of a gunner, whilst the other is in the act of being dis

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placed. By the application of a rope round the termination of the breech, and the lifting of the trail of the carriage, care being previously taken that the trunnions are in their respective sockets, a very slight exertion of manual labour is required to put the gun into fighting trim. That we may be understood, we will add that the trunnions are the short round pieces of iron, or brass, projecting from the sides of the cannon, and their relative position can be easily ascertained by a glance at the gun occupying the foreground of the Illustration where the dismantling is depicted. To perform the labour thus required in managing cannon, is called to serve

Cannon are cast in a solid mass of metal, either of iron or brass ; they are then bored by being placed upon B machine which causes the whole mass to turn round very rapidly. The boring tool being pressed against the cannon thus revolving, a deep hole is made in it, called the bore.

the guns.

THE TREE KANGAROO AND BLACK LEOPARD. The ordinary mode in which the Kangaroos make their way on the ground, as well as by flight from enemies, is by a series of bounds, often of prodigious extent. They spring from their hind limbs alone, using neither the tail nor the fore limbs. In feeding, they assume a crouching, hare-like position, resting on the fore paws as well as on the hinder extremities, while

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they browse on the herbage. In this attitude they hop gently along, the tail being pressed to the ground. On the least alarm they rise on the hind limbs, and bound to a distance with great rapidity. Sometimes, when excited, the old male of the great kangaroo stands on tiptoe and on his tail, and is then of prodigious height. It readily takes to the water, and swims well, often resorting to this mode of escape from its enemies, among which is the dingo, or wild dog of Australia.

Man is, however, the most unrelenting foe of this inoffensive animal. It is a native of New Holland and Van Diemen's Land, and was first discovered by the celebrated navigator Captain Cook, in 1770, while stationed on the coast of New South Wales. In Van Diemen's Land the great kangaroo is regularly hunted with fox-hounds, as the deer or fox in England.

The Tree Kangaroo, in general appearance, much resembles the common kangaroo, having many of that animal's peculiarities. It seems to have the power of moving very quickly on a tree; sometimes holding tight with its fore feet, and bringing its hind feet up together with a jump; at other times climbing ordinarily.

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In the island of Java a black variety of the Leopard is not uncommon, and such are occasionally seen in our menageries; they are deeper than the general tint, and the spots show in certain lights only. Nothing can exceed the grace and agility of the leopards ; they bound with astonishing ease, climb trees, and swim, and the Aexibility of the body enables them to creep along the ground with the cautious silence of a snake on their unsuspecting prey.

In India the leopard is called by the natives the “ tree-tiger," from its generally taking refuge in a tree when pursued, and also from being often seen among the branches : so quick and active is the animal in this situation, that it is not easy to take a fair aim at him. Antelopes, deer, small quadrupeds, and monkeys are its prey. It seldom attacks a man voluntarily, but, if provoked, becomes a formidable assailant. It is sometimes taken in pitfalls and traps. In some old writers there are accounts of the leopard being taken in a trap, by means of a mirror, which, when the animal jumps against it, brings a door down upon him.

CHARITY.
ID sweeter sounds adorn my flowing tongue,
Than ever man pronounced or angel sung;
Had I all knowledge, human and divine,
That thought can reach, or science can

define ;
And had I power to give that knowledge

birth,
In all the speeches of the babbling earth;
Did Shadrach's zeal my glowing breast in

spire,
To weary tortures, and rejoice in fire;
Or had I faith like that which Israel saw,
When Moses gave them miracles and law :

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Charity, decent, modest, easy, kind, ". Softens the high, and rears the abject mind ; Knows with just reins, and gentle hand, to guide Betwixt vile shame and arbitrary pride. Not soon provoked, she easily forgives ; And much she suffers, as she much believes.

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