With a soft roar the water-motor exploded into action, sending the shell far into the sky.
You can own a water-motor like the one shown in Fig. 61, because its construction requires nothing but easily obtained materials.
The Case of this water-motor is made of an empty varnish can—preferably one of gallon capacity.
Meantime the turbine grew steadily in favor as a water-motor, arriving at last at high efficiency.
For continuous work, as we cannot always be turning the wheel, a small steam-engine or water-motor must be employed.
A water-motor, steam engine, or whatever power you can get with which to operate the railway.
When she arrived he was standing in the middle of the stream, explaining the mechanics of the water-motor to a group of men.