A correspondent inquires of us, " why it is that cattle thrive and get fat much faster on grass than they do on hay, and what it is that grass loses by becoming hay ?" Chemical analysis never can give the answer. One kind of food may contain far more of the con stituents of beef than another, and yet not be suitable for food. Cattle have their likes and dislikes of food, as well as human beings, and no animal will thrive on food that does not please the taste, however nutritive it maybe, because it will not eat so much of it. The sweet juice of the grass, which is absent from the hay, makes it palatable, and affords the requisite amount ot moisture to make it di gest most easily. The piers for the railroad bridge across the Great Pedee river, on the Wilmington and Manchester Railroad are composed of large hollow cylinders of cast iron, nineteen feet in circumference, their bases are sunk many feet into the bed of the river by exhausting the air from within them, by the method known as the pneumatic process, for forming founda tions. The cylinders are filled with concrete and thus form piles ol great strength and per manency. A company is being organized at Cincinna ti, Ohio, to pave the turnpike from the head of Western avenue, at Brighton, to Com-monsville, Spring Grove, and Carthage, with iron plates. The sides of the road will be filled in with dirt, and ornamented with shade trees. A law has recently gone into effect in Maine rendering pedlars and other persons who shall sell goods, wares, or merchandise, by sample or otherwise, within that State, liable to a fine i of not less than fifty or more than two hun dred dollars, unless they have been for five 'ears residents of the State. jk