Guide to the manuscript collections in the Academy of Natural Sciences of Philadelphia.

Mode of access: Internet.

Biennial report on the Illinois State Museum of Natural History at Springfield, Illinois.

Mode of access: Internet.

The physical and economic foundation of natural resources.

A collection of papers by eminent authorities, prepared for the Committee on Interior and Insular Affairs.

Proceedings of the Boston Society of Natural History

Mode of access: Internet.

Gleanings of natural history, exhibiting figures of quadrupedes, birds, plants, etc. Most of which have not, till now, been either figured or described : with descriptions of seventy different subjects, designed, engraved, and coloured after nature, on fifty copper-plate prints /

Mode of access: Internet.

Gleanings of natural history, exhibiting figures of quadrupedes, birds, plants, etc. Most of which have not, till now, been either figured or described : with descriptions of seventy different subjects, designed, engraved, and coloured after nature, on fifty copper-plate prints : part II /

Mode of access: Internet.

Gleanings of natural history, exhibiting figures of quadrupedes, birds, plants, etc. Most of which have not, till now, been either figured or described : with descriptions of seventy different subjects, designed, engraved, and coloured after nature, on fifty copper-plate prints : part III /

Mode of access: Internet.

Elements of the branches of natural philosophy connected with medicine : viz, chemistry, optics, acoustics, hydrostatics, electricity, and physiology. Including the doctrine of the atmosphere, fire, phlogiston, water, &c. Together with Bergman's tables of elective attractions, with explanations and improvements /

Mode of access: Internet.

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

A catalogue of books written by Joseph Prestley ... and printed for J. Johnson ..., [3] p.

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.