PSYCHOLOGY

INDUSTRIAL AND MECHANICAL SCIENCE


"A very valuable series of books which combine in a very happy way a popular presentation of scientific truth along with the accuracy of treatment which in such subjects is essential.... In their general appearance, and in the quality of their binding, print, and paper, these volumes are perhaps the most satisfactory of all those which offer to the inquiring layman the hardly earned products of technical and specialist research."—Spectator

"A complete set of these manuals is as essential to the equipment of a good school as is an encyclopaedia.... We can conceive no better series of handy books for ready reference than those represented by the Cambridge Manuals."—School World

Cambridge University Press
C. F. Clay, Manager
LONDON: Fetter Lane, E.C.
EDINBURGH: 100 Princes Street

Transcriber's Notes