18. Dwight, Thomas. Description of the Balænoptera Musculus in the Possession of the Boston Soc. of Nat. Hist. 4to, printed paper covers, author's autog. copy, illus. Boston, May, 1871. $1.50
19. Elliot, H. W. Report on the Conditions of the Fur-seal Fisheries of Alaska, together with all Maps and Illus. accompanying said Report. Document 175; 54th Congress. Pr. paper covers, many colored maps and plates, 240 pp. Wash., 1896. $2.50
20. Elliot, Daniel G. The Land and Sea Mammals of Middle America and the West Indies. Field Colum. Mus. Publ's. 2 vols., 2 parts, 850 pp., printed covers, uncut, illus. Chicago, 1904. $3.00
20A. Flower and Lydekker. Introduction to the Study of Mammals, Living and Extinct. 763 pp., uncut and unopened copy of this standard and profusely illus. work, pub. at $6.00. As new. London, 1881. $5.50
21. Godman, J. D. American Natural History. The Rambles of a Naturalist, with Biographical Sketch of the Author. Finely engraved plates, 2 vols., full morocco and gilt; relates entirely to Mammalia. Philadelphia, 1836. $3.00
22. Gray, Dr. J. E. Catalogue of Monkeys, Lemurs and Fruit-eating Bats in the British Museum. 137 pp., illus. London, 1870. $1.50
22A. Harlan, Richard. Fauna Americana. A Description of the Mammiferous Animals Inhabiting N. America. Calf, 318 pp. Phila., 1825. $3.00
23. Hog-teaching. Requisites For, and Complete Method of Training a Trick Pig. 12mo, uncut, 11 pp., paper. Phila., circa. 1800. $1.50
24. Hornaday, W. T. Extermination of the American Bison. Rept. Nat. Mus., 1886-87. pp. 369-548. Pr. covers, uncut, as new, 22 plates. Out of print. Wash., 1889. $3.00
25. Illiger, Von. Uberblick Der Saugthiere Nach Ihrer Vertheilung uber die Welttheile. (Physicalische Klasse, 1804-11.) 4to, pp. 39-159. With tables, paper. "Vorgelesen den 28 Feb., 1811." $2.00
26. Jackson, Sheldon. Ninth Annual Report on Introduction of Reindeer into Alaska, with Maps and Illus. 261 pp. Wash., 1900. $1.75
27. Jesse, E. Anecdotes of Dogs. Small 4to, half morocco, numerous fine steel plates, rare first ed. Each plate represents a type of the various species. London, 1846. $2.00
28. Krefft, Gerard. The Mammals of Australia. Illustrated by Miss Harriet Scott and Mrs. Helena Ford for the Council of Education, with Short Account of all the Species hitherto Described. Many full-page lithographs. Folio, rare. Sydney, 1871. $5.75