Mr. Denton gives his estimates of the prices at which pipe-tiles may be procured in England, as follows--the prices, which he gives in English currency, being translated into our own: "When ordinary agricultural labor is worth $2 50 per week, pipes half one and a half inch, and half two-inch, maybe taken at an average cost of $4 38 per 1,000. When labor is $3 00 per week, the pipes will average $5 00 per 1,000, and when labor is $3 50, they will rise to $5 62." He adds: "In giving the above average cost of materials, those districts are excluded from consideration, where clay suitable for pipes, exists in the immediate vicinity of coal-pits, which must necessarily reduce the cost of producing them very considerably." Taking the averages of several careful estimates of the cost of tiles and bricks, from the "Cyclopaedia of Agriculture," we have the price of tiles in England about $5 per 1,000, and the price of bricks $7.87, from which the duty of 5s. 6d. should be deducted, leaving the average price of bricks $6.50. Upon tiles there is no such duty. Bricks in the United States are made of different sizes, varying from 8 x 4 in. to the English standard 10 x 5 in. Perhaps a fair average price for bricks of the latter size, would be not far from $5 per 1,000; certainly below $6.50 per 1,000. There is no reason why tiles may not be manufactured in the United States, as cheaply, compared with the prices of bricks, as in England; and it is quite clear that tiles of the sizes named, are far cheaper there than common bricks. What is wanted in this country is, first, a demand sufficient to authorize the establishment of works extensive enough to make tiles at the best advantage; next, competent skill to direct and perform the labor; and, finally, the best machinery and fixtures for the purpose. It is confidently predicted, that, whenever the business of tile-making becomes properly established, the ingenuity of American machinists will render it easy to manufacture tiles at English prices, notwithstanding the lower price of labor there; and that we shall be supplied with small tiles in all parts of the country at about the current prices of bricks, or at about one half the present Albany prices of tiles, as given at the head of this chapter. It should be mentioned here, perhaps, that, in England, it is common to burn tiles and bricks together in the same kiln, placing the tiles away from the hottest parts of the furnace; as, being but about half an inch in thickness, they require less heat to burn them than bricks.