We are now running a mile in one minute and twenty-six seconds; the driving-wheels are revolving a little more than 3½ times in each second; and steam is admitted into, and escapes from, the cylinders fifteen times in a second, exerting each time a force of nearly nine tons on the pistons. We advance 61 feet per second. Our engine weighs 22 tons; our tender about 17 tons; and each car in the train with passengers, about 17 tons; so that our whole train weighs, at a rough calculation, 209 tons, and should we strike an object sufficiently heavy to resist us, we would exert upon it a momentum of 12,749 tons—a force hard to resist!
Look out at the driving-wheels; see how swiftly they revolve. Those parallel rods, that connect the drivers, each weighing nearly 150 pounds, are slung around at the rate of 210 times a minute. Don't you think that enough is required of an engine to run 42 miles per hour, without making it gain 18 miles in that time? Those tender-wheels, too, have been turning pretty lively meanwhile—no less than 600 times per minute. Each piston has, in each minute we have traveled, moved about 700 feet. So you see that, all around, we have traveled pretty fast, and here we are in Columbus, "on time;" and I take it you are satisfied with 42 miles per hour, and will never hereafter ask for 60.
Let us sum up, and then bid good-bye to the Deshler and her accommodating runner, Johnny Andrews. The drivers have revolved 16,830 times. Steam has entered and been ejected from the cylinders 67,320 times. Each piston has traveled 47,766 feet, and we have run only 55 miles, at the rate of 42 miles per hour.
USED UP AT LAST.