These notes, apparently drawn together for lectures, are on general studies, but with a particular emphasis on zoology.

This volume was copied by Philip Holbrook Nicklin, a Philadelphia author and bookseller, from portions of the "London Quarterly Journal of Science Literature and the Arts" and partly from a translation of the original, to which is prefixed a short conchological introduction, containing descriptions of the Linnean genera, & of those species, from which Lamarck has formed most of his genera.

This small volume records excerpts from British natural philosophy and scientific journals, written sometime after 1799. It covers a wide range of subjects, from astronomy to zoology.

This volume, written between May 3 and December 2, includes essays on mineralogy, the vegetable kingdom (such as botany and fruitification), and the animal kingdom (such as zoology, ornithology, and generation of animals).

These papers offer an extensive correspondence, which include copies of outgoing letters, on topics such as entomology, natural history, and zoology.

These letters concern various scientific subjects, such as fishes, insects, snakes, mice, fossils, and mosses. Other subjects include learned institutions, notably the Smithsonian Institution and the Academy of Natural Sciences of Philadelphia, and men of science. Correspondents include S. S. Haldeman, Walter J. Hoffman, Spencer F. Baird, Edward D. Cope, and Leo Lesquereux.

This collection consists of correspondence, manuscripts, drawings, diaries, notebooks, and photographs. Sanderson began his travels in the jungles of Asia and Africa before starting his formal schooling at Eton and Cambridge in the late 1920s and early 1930s. His papers reflect his interest in animals, jungles, and natural history. Late in his life Sanderson's interest turned to UFO's and he was the director of the Society for the Investigation of the Unexplained.

These letters relate to natural history, zoology, and the Muséum national d'histoire naturelle, as well as current events.

A miscellaneous collection of letters written by naturalist Louis Jean Rodolph Agassiz concerning a wide range of topics: natural history and naturalists, geology, mineralogy, fossils, publications, expeditions, and the Museum of Comparative Zoology at Harvard, which he founded.

This collection contains professional and personal correspondece, as well as some personal business accounts. The topics mentioned range from general ornithology to specific birds, particularly of the West Indies and South America; bird illustrations and various publications; paleontology, and zoology.