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. "Stimulating, learned, lucid."—Liverpool Courier.
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.
72. PLANT LIFE
By Prof. J. B. Farmer, D.Sc., F.R.S. (Illustrated.) "Professor Farmer has contrived to convey all the most vital facts of plant physiology, and also to present a good many of the chief problems which confront investigators to-day in the realms of morphology and of heredity."—Morning Post.
78. THE OCEAN
A General Account of the Science of the Sea. By Sir John Murray, K.C.B., F.R.S. (Illus.) "A life's experience is crowded into this volume. A very useful feature is the ten pages of illustrations and coloured maps at the end."—Gloucester Journal.