| Show bovyer of niagara it hi has been calculated thata that a N very ety strong man mail exert exerting ing himself very ery vic violently can ca n for a few minutes work acca at a r rale at beof of one fifth horop power bufa the ahe average voin combined lined output out put of 50 labor laboring hig men working for ten hours a duy would not probably exceed one oo horse power with this in view it bisno is no exaggeration to say that the power of niagara a exceeds the physical power which the whole human bunian race is capable of exerting continuously |
