The surface of the incline resembles an underground trolley road’s tracks.
On a pair of "Skis" or slim skids, down an incline at 50, Capt. Howelson makes a jump of 20 feet, perhaps less, with an efford, being obliged to "lift" himself over.
The act to be really sensational must have more speed and a much longer jump.
Variety 3:5 (03/30/1907)