Watt had perfected, with the aid of Murdoch, both the pumping-engine and the rotative steam-engine for application to mills.
I do not say, "The tables turn because my fluid is rotative."
The rotative speeds of turbines, operating under any given head, should thus increase as their capacities and diameters decrease.
If it is a rotative engine, with a winding barrel, it will cost 270l.
Rotative pumping engines of large size have a plunger speed of 90 ft. per minute.
