The cause for such diversity of opinion in this matter is that it is tested under different circumstances. In riding over an easy, slightly rolling country, the tendency to get back on the saddle is indisputable, for reasons noted by “Warrior” and fully treated of in my chapter on “Saddles and Springs in Relation to Health;” but notice how we slip forward, almost off the saddle, when we have any work to do, as in mounting a difficult hill; and also notice that the farther forward we get, and the less the angle at the pedals between the saddle and the vertical, the less will be the pull on the handle-bar. (See early part of this chapter.) In this connection the very long saddles, largely adopted in America, are of great advantage, since, when not working hard, the rider can sit well back and then slide forward when occasion demands. What “Warrior” means by “greater power from muscular contraction” is rather ambiguous. I may admit that more power can be consumed when the saddle is back, but I deny that more effective power to turn the wheel can be maintained. The rider may get more exercise from “muscular contraction” than from the effect of his weight, but he will cover less distance with equal fatigue. As to “Semi-Racer,” his statement, that more ankle-motion is available when sitting back, is absurd. Will he not lose in “clawing” force below what he gains above? In my chapter on “Ankle-Motion” I would say that the wonderful power therein asserted as possible was attained by having the saddle well over the work. Before disposing finally of this digression, let me express my pleasure that these subjects are meeting with general and enlightened discussion. However much opinions may differ, I regret, as a loyal Yankee, that we in America have to depend so largely upon cross-water importations for the initiative; but it is hoped that such importations may always be on the free list, maugre the high-tariff proclivities of the writer and many others like him on this side. The next point of importance is the mechanical means whereby the rider transmits a revolving motion to the drive-wheel, and to lead up to this let us discuss the evolution from walking to riding. The actual development has been of a legitimate character; first, walking; second, walking with the trunk supported on rolling mechanism; third, propulsion by means of mechanical things like legs, the entire body supported upon rolling mechanism; fourth, propulsion and support all by means of, and upon, rolling mechanism. [Illustration: The Dennis Johnson wheel.]