What is truth? an essay in the theory of knowledge,

"Published on the foundation established in memory of James Wesley Cooper of the class of 1865, Yale college."

Studies in the theory of human society,

Mode of access: Internet.

General sociology; an exposition of the main development in sociological theory from Spencer to Ratzenhofer,

Mode of access: Internet.

A basic course in the theory & practice of quantitative chemical analysis,

Mode of access: Internet.

Liquid claims and national wealth; an exploratory study in the theory of liquidity,

"Done at the Law school of Columbia university, under the auspices of the Columbia university Council for research in the social sciences."-- p. [v]

Essays in experimental logic,

Chapter 1 was written especially for this volume; chapter 2-5 are reprinted (with editorial revisions) from the author's Studies in logical theory; "the other essays are in part reprinted and in part rewritten, with additions, from various contributions to philosophical periodicals" cf. Pref. note.

The place of science in modern civilisation and other essays /

"Reprinted from various periodicals, running over a period of about twenty years."