Besides this, it had a curious device for altering the gearing automatically while one rode, so as to enable one to adapt it to the varying slope in mounting hills. This part of the mechanism he explained to me elaborately. There was a gauge in front which allowed one to sight the steepness of the slope by mere inspection; and according as the gauge marked one, two, three, or four, as its gradient on the scale, the rider pressed a button on the handle-bar with his left hand once, twice, thrice, or four times, so that the gearing adapted itself without an effort to the rise in the surface. Besides, there were devices for rigidity and compensation. Altogether, it was a most apt and ingenious piece of mechanism. I did not wonder he was proud of it.
'Get up and ride, miss,' he said in a persuasive voice.
I did as I was bid. To my immense surprise, I ran up the steep hill as smoothly and easily as if it were a perfectly-laid level.
'Goes nicely, doesn't she?' Mr. Hitchcock murmured, rubbing his hands.
'Beautifully,' I answered. 'One could ride such a machine up Mont Blanc, I should fancy.'
He stroked his chin with nervous fingers. 'It ought to knock 'em,' he said, in an eager voice. 'It's geared to run up most anything in creation.'
'How steep?'
'One foot in three.'
'That's good.'
'Yes. It'll climb Mount Washington.'