VIII.

SMEE'S PROCESS OF THOUGHT ADAPTED TO WORDS AND LANGUAGE. Describing the Relational and Differential Machines. 8vo. 7s.

IX.

LOGIC FOR THE MILLION: a familiar Exposition of the Art of Reasoning. By a Fellow of the Royal Society. 12mo. 6s.

X.

A TREATISE OF EQUIVOCATION. Edited, from an Original MS., by David Jardine, Esq., Barrister-at-Law. Fcp. 8vo. 5s.

XI.

THE THEORY OF REASONING. By Samuel Bailey. 8vo. 7s. 6d.

XII.

ROWTON'S DEBATER: A Series of Debates, Outlines of Debates, and Questions for Discussion. Second Edition (1851). Fcp. 8vo. 6s.