ical means and opened automatically, which was completed in 185». The new dams, like the balls travel freely along the usual pitch-line and bear and how the great awnings were warped across the Davis Island dam, will be of the movable type, so that against the teeth of the meshing wheel. Thus Mr.… … Fig. 3.—AN ODD MECHANICAL TOY, would give vessels of 3,000 tons or more free passage Fig. 2.—A BALL-BEARING WORM GEAR. between Lake Erie and Pittsburg at the expense of cover illustrates a half-timbered house at Greenwich, Jones substitutes rolling friction for the usual sliding Pittsburg capital.…
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