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Notes and References
This item contains 4 references.
2Craig. Appetites and Aversions as Constituents of Instincts. Biol. Bull., 1918, Volume 34.
3Wheeler, W. M. The Parasitic Aculeata, a study in evolution. Proc. Amer. Philos. Soc., 1919, Volume 58.
4Hocking, W. E.Human Nature and Its Remaking. New Haven, 1918. Chapter XXIV.
5W. H. Hudson. The Naturalist in La Plata. London, 1892. Chapter XXII.