[23.] “Cheiroptera,” kī-ropˈte-rä.
[24.] “Rodentia,” rō-denˈshĭ-a.
[25.] “Ungulates,” unˈgū-lates.
[26.] “Pinnigrades,” pinˈni-grades.
[27.] “Plantigrades,” plantˈĭ-grades.
[28.] “Digitigrades,” digˈi-ti-grades.
Those who wish to carry on further the study of Animal Biology will find a wide range of reading on the subject awaiting them. We append a list, but are unable to give publishers and prices: “Comparative Zoölogy,” by James Orton; “Methods of Study in Natural History,” by Agassiz; “Principles of Zoölogy,” by Agassiz and Gould; “Elementary Biology,” by Huxley and Martin; Wood’s “Illustrated Natural History;” Jones’s “Animal Creation;” “Elements of Zoölogy,” by Holder; Packard’s “Zoölogy;” Nicholson’s “Manual of Zoölogy;” “Winners in Life’s Race: or, The Great Backboned Family,” by Arabella B. Buckley; “Life and her Children: or, Glimpses of Animal Life from the Amœba to the Insects,” by Miss Buckley.
For special studies: Lyell’s “Antiquity of Man;” Blumenbach’s “Natural History of Man;” Huxley’s “Elementary Lessons in Physiology;” “Sea-side Studies in Natural History,” by Agassiz; Taylor’s “Half-hours at the Seaside;” Dana’s “Corals and Coral Islands;” Duncan’s “Transformation of Insects;” Packard’s “Guide to the Study of Insects;” Coues’s “Key to North American Birds;” Jordan’s “Popular Key to the Birds, etc., of the Northern United States;” “Birds of North America,” by Baird, Brewer and Ridgeway; Baird’s “Mammals of North America;” Scammon’s “Marine Mammals of North Pacific;” Coues’s “Fur-bearing Animals of North America;” Huxley’s “Manual of Vertebrates;” “Tropical Nature,” by Wallace (a work on reptiles); “Check List of North American Reptiles and Batrachians,” by E. D. Cope; “Game Fishes of the United States,” by G. Brown Goode; “Blind Fishes of the Mammoth Cave,” in “American Naturalist,” vol. vi., p. 6; Holder’s “American Fauna;” Agassiz’s “Development of Osseous Fishes;” Gunther’s “Introduction to the Study of Fishes;” Packard’s “Guide to the Study of Insects,” also his “Half Hours with Insects;” Wood’s “Strange Dwellings,” “Natural History,” and “Homes Without Hands;” Burmeister’s “Entomology;” Lubbock’s “Ants, Bees, and Wasps;” McCook’s “Agricultural Ants of Texas;” “Crustacea of the United States Exploring Expedition,” by J. D. Dana; “The Lobster and Lobster Fishing,” by W. W. Wheildon; “Barnacles,” by J. S. Kingsley; “The Cray Fish,” by Huxley; “Terrestrial Air-breathing Mollusks of the United States,” by W. G. Binney; “Our Sea Anemones,” by A. E. Verrill; “The Atlantic and Depths of the Sea,” by Thompson; Leidy’s “Fresh Water Rhizopods;” Pritchard’s “Infusoria.”
Serial publications containing much matter in regard to these subjects are Popular Science Monthly, American Journal of Science, American Naturalist, Smithsonian Contributions, Annals and Magazine of Natural History, and Nature.