Wallace, A.R.:
Travels on the Amazon and Rio Negro.
Tropical Nature.
Contributions to the Theory of Natural Selection.
Darwinism.
The Malay Archipelago.
Australasia.
Wallaschek, R.: Primitive Music.
Ward, Herbert: Five Years with the Congo Cannibals.
Ward, Wm.: History, Literature and Religion of the Hindus.
Watson and Kaye: The People of India.
Weber, A.: History of Indian Literature.
Weber, Ernst von: Vier Jahre in Afrika.
Weismann: Essays upon Heredity.
Westcott, W.W.: Suicide.
Westermarck, E.: History of Human Marriage. Second Ed., 1894.