are two arrives at its center. As the engine passe's 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 onabled to use pieces of leaf valve is kept in place by a stud, t, 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, ./, and a seat or bearing in the back of the steam-chest, and making the most…
