s are: Length, 218 ft. ; beam, 48 ft. ; depth, 17 the power was by a float upon the water, which ope- ft. There are three hoppers amidships, capable of con- rated beautifully when detached, but when required taining 1,000 tons of dredgings. to work, very little power was developed. I then The… … struction. Mounted upon that end of the armature then, Messrs. Simons have constructed twenty-four HOW TO RUN A PUMP BY WAVE FORCE. shaft opposite the commutator is a pinion, with which vessels of the same character, ranging in capacity from engages a rack bar passing through the top of the cas-…
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