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Cannon. -Old Bread.- Spectacles

the other side, and to come nearer to the one or the other set of figures. And when they have done this, they have a method of calculating a discovery, which they keep as a great secret, but which seems merely the business of the imagination in the diviner or magician.

AN EXTRAORDINARY CANNON. - At Kubberpore-na-Jeal, in India, there is a cannon two hundred and thirteen inches long, sixty-six inches round the muzzle, and eighteen inches round the calibre. It has five, and had originally six, equidistant rings, by which it was lifted up. This gun is called by the natives, Jaun Kushall, or the destroyer of life, and its casting and position are attributed to the doctas or divinities, though its almost obliterated Persian inscriptions declare its formation by human means. But what is most extraordinary about it is, that two peepul trees have grown both cannon and carriage into themselves. Fragments of the iron, a spring, one of the linches, and part of the wood-work, protrude from between the roots and bodies of these trees; but the trees alone entirely support the gun, one of the rings of which, and half of its whole length, are completely hidden between, and inside their bark and trunks. A more curious sight, or a cannon more firmly fixed, though by the mere gradual growth of two trees, cannot well be imagined. The Indians assert that it was only once fired, and then sent the ball twenty-four miles!-Asiatic Journal.

OLD BREAD. - Bartholinus assures us, that in Norway the inhabitants make bread which keeps thirty or forty years; and that they are there fonder of their old hard bread, than others are of new or soft; since the older it is, the more agreeable it grows. For their great feasts, particular care is taken to have the oldest bread; so that at the christening of a child, they have usually bread which had been baked perhaps at the christening of his grandfather! It is made by a mixture of barley and oatmeal, baked between two hollow stones.

The following is said to be A SUBSTITUTE FOR SPECTA- CLES. A man, especially if accustomed to spend his time among books, would be much to be pitied, when his sight begins to fail, could he not in a great measure restore it by the aid of spectacles; but there are some men whose sight cannot be aided by the use either of convex or concave glasses. The following method, adopted by one of these to aid his sight, is certainly worthy of notice. When about sixty years of age, this man had almost entirely lost his sight, seeing nothing but a kind of thick mist, with little black specks which appeared to float in the air. He knew not any of his friends; he could not even distinguish a man from a woman; nor could he walk in the streets without being led. Glasses were of no use to him; the best print, seen through the bell spectacles, seemed to him like a daubed paper. Wearied with this melancholy state, he thought of the following expedient. He procured some spectacles with very large rings; and taking out the glasses, substituted in each circle a conic tube of black Spanish copper. Looking through the large end of the cone, he could read the smallest print placed at its other extremity These tubes were of different lengths, and the openings at the end were also of different sizes; the smaller the aperture, the better could he distinguish the smallest letters; the larger the aperture, the more words or lines it commanded; and consequently, the less occasion was there for moving the head and the hand in reading. Sometimes he used one eye, sometimes the other, alternately relieving each; for the rays of the two eyes could not unite upon the same object when thus separated by two opaque tubes. The thinner these tubes, the less troublesome are they. They must be totally blackened within, so as to prevent all shining, and they should be made to lengthen or contract, and enlarge or reduce the aperture, at pleasure. When he placed convex glasses in these tubes, the letters indeed appeared larger, but not so clear and distinct as through the empty tube; he also found the tubes more convenient when not fixed in the spectacle rings; for when they hung loosely, they could be raised or lowered with the hand, and one or both might be used, as occasion required. It is almost needless to add, that the material of the tubes is of no importance, and that they may be made of iron or tin as well as of copper, provided the insides of them be sufficiently blackened. - See La Nouveli, Bigaruré for February, 1754, or Monthly Magazine for April, 1799.

WINTER SLEEP OF ANIMALS AND PLANTS. - The winter sleep is a very singular property of animals and plants; and, though it occurs daily before our eyes, we are not able to explain the phenomena with which it is attended. In cold countries, many animals, on the approach of winter, retire to their subterraneous abodes, in which they bury themselves under the snow, where they remain five or six months without nourishment or motion; nay, almost without circulation of their blood, which flows only sluggishly, and in the widest vessels. Their perspiration is almost imperceptible; but still they lose something by it, as they enter their winter quarters in very good condition, and are exceedingly thin when they return from them.