CHAPTER X

NIAGARA IN HARNESS

The volume of water at the falls, p. 184--The point at which the falls are "harnessed," p. 185--Within the power-house, p. 186--Penstocks and turbines, p. 188--A miraculous transformation of energy, p. 189--Subterranean tail-races, p. 191--The effect on the falls, p. 192--The transmission of power, p. 194--"Step-up" and "step-down" transformers, p. 198.