The principles of science

Young's Demonstrative Translation of Scientific Secrets Or, A Collection of Above 500 Useful Receipts on a Variety of Subjects

Wissenschaft der Logik — Band 2

The Essays of Arthur Schopenhauer; the Art of Controversy

Discours de la méthode

A System of Logic, Ratiocinative and Inductive (Vol. 1 of 2)

Logic, Inductive and Deductive

A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. II

Essays in Experimental Logic

The Essentials of Logic, Being Ten Lectures on Judgment and Inference

First notions of logic (preparatory to the study of geometry)

Grundriß der Logik