Experiments and observations relating to various branches of natural philosophy with a continuation of the observations on air. The second volume /

Mode of access: Internet.

Experiments and observations relating to various branches of natural philosophy with a continuation of the observations on air. Vol. III /

A catalogue of books written by Dr. Priestley and printed for J. Johnson ..., p. [449]-454.

Occasional papers of the Boston Society of Natural History.

Mode of access: Internet.

Proceedings of the Boston Society of Natural History.

Mode of access: Internet.

Table of natural logarithms ... /

"One in a series of mathematical tables prepared by the Project for the Computation of Mathematical Tables."--Volume I., Pref.

The mathematical principles of natural philosophy /

Mode of access: Internet.

Mathematical elements of natural philosophy ... /

Mode of access: Internet.

Wanderings in South America, the North-West of the United States, and the Antilles, in the years 1812, 1816, 1820 and 1824 : with original instructions for the perfect preservation of birds, &c. for Cabinets of Natural History /

Sabin,

Wanderings in South America, the North-West of the United States, and the Antilles, in the years 1812, 1816, 1820, & 1824 : with original instructions for the perfect preservation of birds, &c. for Cabinets of Natural History /

Sabin,

Darwinism: an exposition of the theory of natural selection, with some of its applications.

Mode of access: Internet.

Lepidoptera of the Congo, being a systematic list of the butterflies and moths collected by the American Museum of Natural History, Congo expedition, together with descriptions of some hitherto undescribed species.

Reprinted from Bulletin of the American Museum of Natural History, Vol. XLIII, art. VI, pp. 109-369.

Proceedings of the Portland Society of Natural History.

Title from cover.

Visitors' guide to the local collection of birds in the American Museum of Natural History, New York City : with an annotated list of the birds known to occur within fifty miles of New York City /

Contains index.

Bulletin of the Washburn College Laboratory of Natural History.

Edited by F. W. Cragin.

Occasional papers - Minnesota Museum of Natural History, University of Minnesota.

Mode of access: Internet.