The last engine was of a different type, and a type which among experts has not been considered best adapted to extremely high speeds. Somewhat heavier than its predecessors (weighing 56-1/2 tons in working order), this engine was a ten-wheeler, with three pairs of coupled drivers and a four-wheeled swivelling truck. It had the same small cylinders (17 by 24 inches), and driving-wheels of only 68 inches diameter. It was a bold experiment to put such an engine to do such work; and nothing could well be devised for fast speeds more unlike the magnificent engine "No. 999," which was built in the New York Central Railroad shops at West Albany, and is the glory of the New York Central road, or than the London and Northwestern compound engine with its 88-inch driving-wheels, or the Caledonian locomotive (which did the best running in the English races) with its 78-inch drivers and cylinders 18 by 26 inches. It was now after ten o'clock in the morning; and at Erie crowds had assembled at the station to see the train go out, for news of what was being done had by this time gone abroad. The platforms, too, at every station from Erie to Buffalo were thronged with people as we went roaring by. In Dunkirk (through which we burst at 75 miles an hour) crowds stood on the sidewalks and at every corner. To describe the run for those 86 miles in detail would be impossible, or to put into words the tension of the suppressed excitement among those on board the train as miles flew by and we knew that we were travelling as men had never travelled before. For those who had misgivings as to the possibilities of the type of engine there was a surprise as soon as she picked up the train. She must have reached a speed of a mile a minute within five miles from the first movement of the wheels. The first eight miles were finished in 8 minutes, 49 seconds. From there on there was never an instant of slackening pace. From 60 miles an hour the velocity rose to 70; from 70 to 80; from 80, past the previous high-water marks, to 85 and 90, and at last to over 92. Trains have been timed for individual miles at speeds of over 90 miles before. There is even said to be on record an instance of a single mile run at 112 miles an hour. But never before has an engine done what the ten-wheeler did that day, when it reached 80 miles an hour and held the speed for half an hour; reached 85 miles an hour and held that for nearly ten minutes; reached 90 miles and held that for three or four consecutive miles. A speed of 75 miles an hour (a mile and a quarter a minute) was maintained for the whole hour, and the 75 miles were actually covered in the 60 minutes. The entire 86 miles were done in 70 minutes 46 seconds,--an average speed of 72.91 miles an hour. In the English run, a speed of 68.40 miles was maintained for an even hour, 69 miles being done in 60.5 minutes; and 141 miles were run at an average speed of 67.20 miles an hour.