Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 449
ns of the most beautiful of the alga:, thePleiirosigma angulata. If these stereotypes are examinedwith one eye only, we shall be immediately convinced thatwe have to do with hexagonal polygons. It is useless togive any long exposition of a figure so clearly explanatory;it is simply an effect of the… … Third figure. previous one. In this the white points seem to destroy theblack spaces, and to approach each other tangentially, andthe irradiation is so intense that the white circles appearmuch larger than the black of the former one, although ofthe same diameter. There are in these facts many…
Scientific recreations
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