are two arrives at its center. As the engine passés the center, and then wrapping round this roll a piece of tobacco- ports, d d’, leading one to each end of the cylinder. the port, d’, moves upward under the port, g’, and com- leaf. The wrappers are cut of the proper form, which D is the valve by… … engine is in operation. The enabled to use pieces of leaf valve is kept in place by a stud, ¢, at its center, fitting to of any size, even the small broken fragments, for from under the part, m, of the face of the arm, jf, and a seat or bearing in the back of the steam-chest, and making the most…
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