49. PSYCHOLOGY, THE STUDY OF BEHAVIOUR

By Prof. W. McDougall, F.R.S., M.B.

In Preparation

ELECTRICITY. By Dr Gisbert Kapp.
CHEMISTRY. [By] Prof. R. Meldola, F.R.S.
THE MAKING OF THE EARTH. By Prof. T. W. Gregory, F.R.S.
THE MINERAL WORLD. By Sir T. H. Holland, K.C.I.E., D.Sc.
THE HUMAN BODY. By Dr A. Keith, M.D., F.R.C.S.
PLANT LIFE. By Prof. J. B. Farmer, F.R.S.

Philosophy and Religion

15. MOHAMMEDANISM

By Prof. D. S. Margoliouth, M.A., D.Litt. "This generous shilling's worth of wisdom.... A delicate, humorous, and most responsible tractate by an illuminative professor."—Daily Mail.

40. THE PROBLEMS OF PHILOSOPHY

By the Hon. Bertrand Russell, F.R.S. "A book that the 'man in the street' will recognise at once to be a boon.... Consistently lucid and non-technical throughout."—Christian World.

47. BUDDHISM