TRANSCRIBER’S NOTE Italic text is denoted by _underscores_. A superscript is denoted by ^x or ^{xx}, for example l^m·50. Basic fractions are displayed as ½ ⅓ ¼ etc; other fractions are shown in the form a-b/c, for example 1/80 or 7-19/48. The tables in this book are best viewed using a monospace font. Some minor changes to the text are noted at the end of the book. THE INTERNATIONAL SCIENTIFIC SERIES. VOLUME XXVII. INTERNATIONAL SCIENTIFIC SERIES. _NOW READY. In 12mo and bound in cloth._ I. FORMS OF WATER, In Clouds, Rain, Rivers, Ice, and Glaciers. By Prof. JOHN TYNDALL. $1.50. II. PHYSICS AND POLITICS; or, Thoughts on the Application of the Principles of “Natural Selection” and “Inheritance” to Political Society. By WALTER BAGEHOT. $1.50. III. FOODS. By EDWARD SMITH, M. D., LL. B., F. R. S. $1.75. IV. MIND AND BODY. By ALEXANDER BAIN, LL. D. $1.50. V. THE STUDY OF SOCIOLOGY. By HERBERT SPENCER. $1.50. VI. THE NEW CHEMISTRY. By Prof. JOSIAH P. COOKE, Jr., of Harvard University. $2.00. VII. THE CONSERVATION OF ENERGY. By Prof. BALFOUR STEWART, LL. D., F. R. S. $1.50. VIII. ANIMAL LOCOMOTION; or, Walking, Swimming, and Flying, with a Dissertation on Aeronautics. By J. B. PETTIGREW, M. D. Illustrated. $1.75. IX. RESPONSIBILITY IN MENTAL DISEASE. By H. MAUDSLEY, M. D. $1.50. X. THE SCIENCE OF LAW. By Prof. SHELDON AMOS. $1.75. XI. ANIMAL MECHANISM. A Treatise on Terrestrial and Aërial Locomotion. By E. J. MAREY. 117 Illustrations. $1.75. XII. THE HISTORY OF THE CONFLICT BETWEEN RELIGION AND SCIENCE. By JOHN WILLIAM DRAPER, M. D., LL. D. $1.75. XIII. THE DOCTRINE OF DESCENT, AND DARWINISM. By Prof. OSCAR SCHMIDT, of Strasburg University. $1.50. XIV. THE CHEMISTRY OF LIGHT AND PHOTOGRAPHY: In its Application to Art, Science, and Industry. By Dr. H. VOGEL. 100 Illustrations. $2.00. XV. FUNGI; their Nature, Influence, and Uses. By M. C. COOKE, LL. D. Edited by Rev. M. J. BERKELEY, F. L. S. 109 Illustrations. $1.50. XVI. THE LIFE AND GROWTH OF LANGUAGE. By Prof. W. D. WHITNEY, of Yale College. $1.50. XVII. MONEY AND THE MECHANISM OF EXCHANGE. By W. STANLEY JEVONS, M. A., F. R. S. $1.75. XVIII. THE NATURE OF LIGHT, with a General Account of Physical Optics. By Dr. EUGENE LOMMEL, Professor in the University of Erlangen. 88 Illustrations and a Plate of Spectra in Chromo-lithography. $2.00. XIX. ANIMAL PARASITES AND MESSMATES. By M. VAN BENEDEN, Professor of the University of Louvain. 83 Illustrations. $1.50. XX. ON FERMENTATIONS. By P. SCHÜTZENBERGER, Director at the Chemical Laboratory at the Sorbonne. 28 Illustrations. $1.50. XXI. THE FIVE SENSES OF MAN. By JULIUS BERNSTEIN, O. O. Professor in the University of Halle. 91 Illustrations. $1.75.