ater which may be given tothem. From the centres, or the line joining the pivots on which thesepaddle-boards turn, there proceed short arms K, firmly fixed to thepaddle-boards at an angle of about 120°. On a motion given to thisarm K, it will therefore give a corresponding angular motion to… … between each radial arm L and the short paddle-arm K is capable ofbeing changed by any motion imparted to L: the radial arms areconnected at the other end with a centre, round which they are ca-pable of revolving. STEAM NAVIGATION. 407 Now, since the points A, B, C, &c, which are the pivots on…
