Boys' own book : a complete encyclopedia of athletic, scientific, outdoor, and indoor sports (1881)
Clarke, William, 1800-1838 · New York : J. Miller, Publisher · leaf 356
eed^ and consequently to give a relativelyincreased progressive motion to its upper part; then comesthat force by which its several parts cohere, and which maybe represented by o h ; so that the two forces producing therevolution of the point o ai-e justly expressed by the lines o o,o H; but these… … still farther the causes of rotation to -which I have alluded.Mr. Seymour i^roduce^l a watch-glass, in the hollow of whichstood a dancing-figure of thin card, as above represented. He placed it upon a black japanned waiter,* which he heldin an inclined position, when it immediately slided down…
Amusements · Games · Sports
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