the best features of the most recent indexes, and will be a thoroughly practical guide to the store of information which the volumes of the magazine contain. The compiler is Mr. Frederik A. Fernald, of the editorial staff of the Monthly.
New Fragments. By John Tyndall, F. R. S. New York: D. Appleton & Co. Pp. 500. Price, $2.
The contents of this volume consist of essays and addresses prepared for various occasions and embracing a considerable range of topics. Among those dealing with natural science are a review of Goethe's Farbenlehre, a magazine article on Atoms, Molecules, and Ether Waves, another with the title About Common Water, and a paper on the Origin, Propagation, and Prevention of Phthisis. Tyndall's well-known power of making scientific subjects luminous and fascinating is abundantly shown throughout this volume. Take this passage from About Common Water:
The wonderful style above illustrated contributes a great part to the effectiveness of Prof. Tyndall's teachings in science. Many a student, using one of Tyndall's treatises on Heat, Light, or Electricity as a text-book, has found himself drawn on to read far beyond the limits set for the next lesson. Obviously the books that get themselves read are the ones that produce results; hence it is probably safe to say that no book has done more to spread an understanding of the nature and behavior of one of the great forces of Nature than his Heat as a Mode of Motion.
Tyndall is still more fascinating and becomes even inspiring when he discourses of his favorite recreation, climbing the Alps. There are two essays dealing with Alpine experiences in this collection, and many of the phenomena of glaciers, snow-fields, and mountain mists are introduced into the scientific papers. The following is a description of the sort with which his Alpine chapters abound:
Among the New Fragments are several biographical sketches, and these are fully as vivid as the essays already mentioned. The power of expression that can so greatly enliven inanimate objects is naturally no less potent in dealing with subjects that have lived. It is well for science that Tyndall's bent was turned so strongly toward scientific matters, for otherwise biography would long since have monopolized him. In reading his sketch of Count Rumford one is made to feel that the investigator of a century ago was also a man, and, moreover, what manner of man he was. The same applies to the account of Thomas Young; and when our author speaks of one whom he has known in the flesh, as in his Personal Recollections of Thomas Carlyle, and his address on unveiling the statue of Carlyle, the image of his subject stands out with marvelous distinctness.
Among the miscellaneous papers in this