“Mr. Turner is well qualified to write with authority on the subject. The book sets forth the principles of flight in plain non-technical language. One is impressed by the complete thoroughness with which the subject is treated.”—Daily Graphic.

SCIENTIFIC IDEAS OF TO-DAY. A Popular Account, in Non-technical Language, of the Nature of Matter, Electricity, Light, Heat, Electrons, &c. &c. By Charles R. Gibson, F.R.S.E., Author of “Electricity of To-Day,” &c.

“Supplies a real need.... Mr. Gibson has a fine gift of exposition.”—Birmingham Post.

ASTRONOMY OF TO-DAY. A Popular Introduction in Non-technical Language. By Cecil G. Dolmage, LL.D., F.R.A.S. With frontispiece in colours, & 45 other illustrations.

“Dr. Dolmage has absolutely kept to his promise to introduce the reader to an acquaintance with the astronomy of to-day in non-technical language.”—Saturday Review.

ELECTRICITY OF TO-DAY. Its Work and Mysteries Explained. By Charles R. Gibson, F.R.S.E.

“Mr. Gibson has given us one of the best examples of popular scientific exposition that we remember seeing. His book may be strongly commended to all who wish to realise what electricity means and does in our daily life.”—The Tribune.

ENGINEERING OF TO-DAY. A Popular Account of the Present State of the Science, with many interesting Examples, described in Non-technical Language. By Thomas W. Corbin. With 73 illustrations & diagrams.

“Most attractive and instructive.”—Record.

“The descriptions which are given of various types of engineering structures and work are excellent.”—Yorkshire Observer.