There are fully 1,000 tons of pipmg of various kinds in the average Atlantic liner. The furnaces will consume no less than 7,500,000 cubic feet of air an hour. The boiler tubes, if placed in a straight line, would stretch nearly ten miles and the condenser tubes more than twenty-five miles. The total number of separate pieces of steel In the main strucnre of the snip is not less than 40,000, and the total number of cubic feet of timber used in the construction is mors than 10,000. The total number of rivets is not far from 1,250,000.