The young folk's cyclopædia of games and sports ; (1899)
Champlin, John Denison, 1834-1915, Bostwick, Arthur Elmore, 1860-1942, joint author · New York, H. Holt and company · leaf 276
the chimney, and there is then anupward draught on one side of thepartition, and a downward draughton the other. The candle may beput out as in Experiment 3. 5. Bore several holes through aboard, and enlarge some of them atone end so that they will be conicalin form. Suspend a square of paper,by a… … the board when blown at through aconical hole. The reason is, thatthe breath is kept together in astream by the straight hole, whereasit disperses to all sides in the conicalhole, and carries with it some of theair on the other side of the board sothat a slight return current is caused.This…
Games · Sports · Card games
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