Hayes, Frederick RonaldNova Scotian Institute of Science2011-02-192011-02-191926Hayes, F.R. (1926). The negative geotropism of the periwinkle: A study in littoral ecology. Proceedings and Transactions of the Nova Scotian Institute of Science, 16(4), 155-173.http://hdl.handle.net/10222/13240Presented January 18, 1926; Includes bibliographical references.enFundy, Bay ofGastropodsSnailsLittorinaThe negative geotropism of the periwinkle: A study in littoral ecologyText