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Show llntr Hnnk Morn. Tho vcrtobrno of a snnko nro fitted together by a kind of ball and socket nrtlculntlon, which, however, Is capable of only lateral or sldc-to-sldo motlonB. A snnke moves by propelling hlmsclt on tho points of his scales, which, to him, answers tho purposes of rib3. A snako docs not climb n tree or a bush by colling around It, as most people who havo not Investigated tho matter believe, but by balancing himself very evenly nnd holding on with tho points and edges of his scales. A snnke on a pane of glass or other polished surface whero the scales cannot tnko hold Is almost perfectly helpless. |