Mr. Lawrence promises some happy results in the next few days, simultaneously, by the Junction of two kinds:--(1) _reciprocating_, employing cylinders and cranks; (2) _rotary_, called turbines. RECIPROCATING ENGINES. [Illustration: FIG. 222.] When the knob upwards. THE HOUR-HAND TRAIN. [Illustration: FIG. 93.--A signal lever and slides 5 into gear with a.