Show A Tireless Turbine In a gas factory at Ivry near Paris a Laval turbine driven by Jets of steam was once set to work and and when fairly under way was driven for 3000 hours or 150 days without stopping for an Instant An automatic oiler kept It lubricated and a work man visited It once In 12 hours to re plenlsh tho oil reservoir The speed of tho circumference of the I rotatl disk being about rotating six miles a minute n point on that circumference must have traveled In the courso of tho 160 days almost five and a half r I times the distance tram tho earth to the moon I Harpers Wcekyl |