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Haeckel. History of Creation; Evolution of Man.
Hartman. Anthropoid Apes.
Hickson. The Fauna of the Deep Sea.
Huber. The Natural History of Ants.
Huxley. The Study of Zoölogy.
Kemp. Indication of Instinct.
Kirby and Spence. Entomology.
Lindsay. Mind in the Lower Animals in Health; Mind in the Lower Animals in Disease.
Lubbock. Origin and Metamorphoses of Insects; Ants, Bees, and Wasps; The Social Hymenoptera; The Senses, Instincts, and Intelligence of Animals.