With regard to the engines of the _Clermont_, Fulton claimed to have been the first to use triangular beams in the body of his boat “to communicate the power from the piston rod to the Water wheels,” and work his air-pump. But if the reader will turn back to the illustration on page 51, he will find that the triangular beam was also employed in the engines of his first steamboat on the Seine. During the winter of 1807–8 the _Clermont_ was altered very considerably, so that her name was changed to that of the _North River_. Writing to Livingston on November 20th, Fulton suggests that a new hull be built so as to become nearly twice as stiff as she was originally, that she should carry much more sail, have a new boiler installed, additional knees and timbers, new cabins and other improvements. Under her new name this re-built craft ran regularly to Albany and back at a single fare of seven dollars a head. On her forestay she carried a fore-sail, and besides her other courses on her fore-mast she even had stun’s’ls at times, a mizen with a gaff main-sail being stepped as before. There was a ladies’ cabin containing six upper and four lower berths. The engine was one of Boulton and Watt’s, having a cylinder whose piston was 2 feet in diameter. On the top of the piston was a cross-head made of iron which was slid up and down between guides on the “gallows-frames,” that reached from the bottom of the vessel to 12 feet above the deck. This will be clearly seen in the second illustration of the reconstructed _Clermont_ facing page 70. The “gallows-frames” are just to the left of the funnel, and the cross-head can be discerned sliding up and down the iron guides. By comparing this with the below diagram, a very fair idea will be obtainable of the working of this portion of her mechanism. [Illustration: FULTON’S PRELIMINARY STUDY FOR THE ENGINE OF THE _CLERMONT_ _From the Original in the possession of the New Jersey Historical Society._]