58. ELECTRICITY

By Gisbert Kapp, D.Eng., Professor of Electrical Engineering in the University of Birmingham. (Illustrated.) "It will be appreciated greatly by learners and by the great number of amateurs who are interested in what is one of the most fascinating of scientific studies."—Glasgow Herald.

62. THE ORIGIN AND NATURE OF LIFE

By Dr Benjamin Moore, Professor of Bio-Chemistry, University College, Liverpool.

67. CHEMISTRY

By Raphael Meldola, F.R.S., Professor of Chemistry in Finsbury Technical College, London. Presents clearly, without the detail demanded by the expert, the way in which chemical science has developed, and the stage it has reached.

In Preparation

THE MINERAL WORLD. By Sir T. H. Holland, K.C.I.E., D.Sc.
PLANT LIFE. By Prof. J. B. Farmer, F.R.S.
NERVES. By Prof. D. Fraser Harris, M.D., D.Sc.
A STUDY OF SEX. By Prof. J. A. Thomson and Prof.Patrick Geddes.
THE GROWTH OF EUROPE. By Prof. Grenville Cole.
OCEANOGRAPHY. By Sir John Murray, K.C.B., F.R.S.

Philosophy and Religion

15. MOHAMMEDANISM