The second of the large engines which I finished was for the Otis Steel Works. I went to Cleveland myself to start the engine and found that Mr. Wellman, the general manager, had it running already. Mr. Otis, the president, was very much pleased with it, and well he might be. This was the first mill to roll plates from the ingot to the finish without reheating. These were the kind of diagrams it made. It will be observed that these were taken at different times and under different pressures. Unfortunately the right hand one is the only diagram I have from the crank end of the cylinder. In rolling these heavy plates the changes were made instantaneously from full load to nothing and from nothing to full load. The engine made 93 revolutions per minute, and it will be seen that the changes were made by the governor in a third of a second or less, the speed not varying sensibly. Mr. Otis said to me: “Oh, Mr. Porter, what shall I do with you? You cannot imagine the loss I have suffered from your delay in furnishing this engine.” I said: “Mr. Otis, you know the terrible time I have had, and that I have done the very best I could.” “Yes,” he said, “I know all about it.” He had, in fact, been to Philadelphia and seen for himself. He added: “You make a small engine suitable for electric lights; what is the price of an engine maintaining twenty-five arc lights?” I told him $1050. “Well,” said he, “you strike off the odd fifty and let me have one for a thousand dollars, and we will call it square,” so I had some sunshine on my way. I present a portrait of this just man. The engine is now running as good as new after twenty-five years, and the company five or six years afterwards put in another 48×66-inch to drive a still larger train.