The newspapers passing through the mails annually, are estimated at 55,000,000. In 1843, they were estimated at 43,500,000, of which 7,000,000 were free. If the calculation is made on the whole number, the increase is 20 per cent. in four years. But if, as is probable, the 55,000,000 in 1847 are chargeable papers, the increase is 33-½ per cent. If anything can make the newspaper postage pay for itself, it will be the multiplication of newspapers, as it is well known that a great reduction of cost of individual articles is produced by the great number required. What fortunes are made by manufacturing cotton cloth, to be sold at six or eight cents per yard; and by making pins and needles, which pass through so many processes, and yet are sold at such a low rate. Each yard of cloth, each needle, each pin, is subjected to all those several steps, and yet the greatness of the demand creates a vast revenue from profits which are so small upon each individual article as to be incapable of being stated in money; the cheapness of production extending the sale, and the extent of sale favoring the cheapness of production. An establishment like the post-office requires a certain amount of expenditure and labor, to keep the machinery in operation, though the work be but little, not half equal to its capacity, and it can often enlarge its labors and its productiveness, without requiring, by any means, a corresponding increase of expense; and enlarged to a considerable extent, perhaps, without any increase at all. Thus the cost of the British post-office, which was £686,768 in 1839, when the number of letters was only 86,000,000, was increased only to £702,310, but little more than 10 per cent. in the following year, when the number of letters was increased to 170,000,000. That is, the quantity of business was doubled, while the expense was only increased one-tenth. And in 1846, when the letters were 322,000,000, or nearly fourfold the former number, the expense was only £1,138,745, an increase of but 65 per cent., and the greater part of this—almost the whole—was for increased facilities given, and not owing to the increased number of letters. Had the cost kept pace with the increase of business, it would have been, in 1847, nearly £3,000,000 sterling.