_— O10 however, because, as is well known, the design in that in- Sailing Faster than the Wind. pentagon; Fig. 3 a triangle and a hexagon. It will be noted To the Editor of the Scientific American: strument is placed on the perforated disk itself, and we look that, in the triang’e, C F coincides… … Demonstration :— When the side, C F, is found, place other less glass. The mentum; but it moves without friction, and it is difficult to wheel, C, and the lines equal to it in the circle with their ends in contact, until understand why it should be distanced by an ice boat if both disk, D, turn to-…
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