18. INTRODUCTION to MATHEMATICS
By A. N. Whitehead, Sc.D., F.R.S., (with Diagrams.) "Mr Whitehead has discharged with conspicuous success the task he is so exceptionally qualified to undertake. For he is one of our great authorities upon the foundations of the science, and has the breadth of view which is so requisite in presenting to the reader its aims. His exposition is clear and striking."—Westminster Gazette.
19. THE ANIMAL WORLD
By Professor F. W. Gamble, D.Sc., F.R.S., (Many Illustrations.) "For the thoughtful and philosophically minded student at the present day," says Sir Oliver Lodge, in his Introduction to this volume, "such a book is most timely and helpful. . . . I am glad to have the opportunity of commending the series to that increasing number of readers who are hungry for trustworthy and assimilable information."
20. EVOLUTION
By Professor J. Arthur Thomson, M.A., and Professor Patrick Geddes. This volume, which, as the Manchester Guardian says, "is in its survey the most comprehensive of those devoted to Science, and is in a sense the key to them all," summarises the facts of Variation and Heredity, Selection, Function, and Environment, and the chief Evolution theories, and concludes with an important "re-interpretation" of the development process.
22. CRIME AND INSANITY
By Dr C. A. Mercier, F.R.C.P., F.R.C.S., Author of "Text-Book of Insanity," etc. "Furnishes much valuable information from one occupying the highest position among medico-legal psychologists."—Asylum News.
28. PSYCHICAL RESEARCH
By W. F. Barrett, F.R.S., Professor of Physics, Royal College of Science, Dublin, 1873–1910. "As a former President of the Psychical Research Society, he is familiar with all the developments of this most fascinating branch of science, and thus what he has to say on thought-reading, hypnotism, telepathy, crystal-vision, spiritualism, divinings, and so on, will be read with avidity."—Dundee Courier.
31. ASTRONOMY
By A. R. Hinks, M.A., Chief Assistant, Cambridge Observatory. "Original in thought, eclectic in substance, and critical in treatment. . . . No better little book is available."—School World.
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