
This paper is dedicated to Professor Alexander Petrunkevitch on his eightieth birthday. ntribution from the Osborn Zoological Laboratory, Yale University, New Haven, Connecticut. t Theresa Seessel fellow, Yale University, from the University of Vienna. F. A. Forel, "Temperatures lacustres: Recherches sur la temp6rature du Lac Leman et utres lacs d'eau-douce," Arch. sci. phys. et nat. (ser. 3), 35, 505-575, 1880. F. Ruttner, "Hydrographische und hydrochemische Beobachtungen auf Java, Sumatra und li," in Tropische Binnengewdsser (Arch. Hydrobiol., Suppl., Vol. 8 [1931]), pp. 197-454. G. E. Hutchinson, The Study of Lakes, Vol. 1: Geographical and Physiochemical Limology appear late in 1956). J. Murray, in E. H. Shackleton, The Heart of the Antarctic (London: W. Hienemann, 1909), 1. 2.
Theory of Functions
Theory of Functions
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