shoulders, whereas the swing frame of the Otto goes back, and the rider
of necessity assumes that position in which his arms are relieved of all
strain. In so far as the general position taken by the automatic Otto
frame is concerned, nearly the same effect can be obtained by using the
swing frame of the Devon tricycle, which can be shifted and locked in
any position which the rider wishes, or by the sliding saddle, which can
be slid backward or forward and locked so as to place the rider in one
of three positions. Though the rider can by these devices assume nearly
that position with respect to the treadles which is most advantageous,
he cannot obtain that curious fore and aft oscillation made use of by
the Ottoist in climbing hills, which, as the model on the table shows,
enables him to get past the dead points without even moving, and which,
therefore, makes the Otto by far the best hill-climbing machine there
is, if account is taken of the high speeding with which all Ottoists
ride. This is a proposition which none who knows the machine will
question for one moment.

The freedom of motion resulting from the swing of the frame of the Otto
gives a pleasurable sensation, which those who have only experienced the
constrained motion of a three-wheeler cannot even understand.

The very peculiar method of driving and steering, which seems so
puzzling to the novice, especially if he is a good rider of other
machines--for in that case he is far worse off than one who has never
ridden anything--give the rider, when he is familiar with them, a
control over the machine which is still surprising to me. In the first
place, the machine will run along straight, backward or forward, so
long as the handles are let alone. This automatic straight running is a
luxury, for until a deviation has to be made, the steering handles need
not be touched, and the rider may, if sufficiently confident, travel