. VANDUZEN CO., to 108 £. Second St., Cincinnati, 0. VELOCITY OF ICE BOATS. A COL- lection of interesting letters to tiie editor of the Scien-tific American on the question of the speed of iceboats, deuior.st ratiiitr how and why it is that these craftsail faster than the wind which propels them.… … Not a toy. but a high grade, substantial machine, which we guarantee to do all we claim for it. We place this machine on the market at above low price in order to introduce our Dynamos and Motors of larger sizes. \i^°Send for circular No. 26. ROTH BR08. & CO., 30 to 34 Market St., Chicago, HI.,…
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