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retiring President of the A. A. A. S., Columbus meeting, 1899. Proceedings of the A. A. A. S., vol. XLVIII, to which the reader is referred for valuable data. 160 "Professor Perry, F. R. S., in his admirable monograph on Spinning Tops, (Romance of Science: Spinning Tops, by Professor John Perry, M. E., D.Sc., F. R. S., 1890, pp. 107-110, 12-13, cited by O'Neil, _op. cit._, p. 540.) shows how a spinning gyrostat whose spinning axis is compelled by the experimenter into a horizontal plane is then constrained by the earth's motion alone to direct its spinning axis due north and south and so to indicate mathematically the lie of the true meridian of its spot. If the spinning gyrostat be next shut off from all other motion except a vertical one in the plane of this meridian, its spinning axis will point its north end up to, and continue to point truly up to, the celestial pole." Then, adds Professor Perry, in terms strangely suitable to my purposes: "It is with a curious mixture of feelings that one first recognizes the fact that all rotating bodies, fly-wheels of steam-engines and the like, are always tending to turn themselves towards the Polestar; gently and vainly tugging at their foundations, all the time they are in motion, to get round towards the object of their adoration." 161 The Incas claimed to have descended from three windows. See Rites and Laws of the Incas, p. 77. 162 It is noteworthy that the Zuni name for village in general is ti
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