Elements of Physics. By Neil Arnett, M.D., F.R.S. Sixth edition.
Part I. (Longman and Co.)—The public which eagerly bought up five editions of this work in an incomplete state will welcome this new edition, which the author's withdrawal from the active duties of his pro- fession now enables him to present. The admirable clearness of the style and the careful abstinence from technical language make the work unique as a text-book for the general reader, in days when everybody wants to know something of natural science. The work is thoroughly revised and brought up to the present time. And the second volume or part, treating of heat, light, electricity, magnetism, astronomy, and popular mathematics, will be published before the close of the year.