THE INTERNATIONAL SCIENTIFIC SERIES. VOLUME XV. THE INTERNATIONAL SCIENTIFIC SERIES. _Works already Published._ I. THE FORMS OF WATER IN RAIN AND RIVERS, ICE AND GLACIERS. By J. Tyndall, LL.D., F.R.S. With 26 Illustrations. Price, $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. Price, $1.50. III. FOODS. By Dr. Edward Smith. Illustrated. Price, $1.75. IV. MIND AND BODY: the Theories of their Relations. By Alexander Bain, LL.D. Price, $1.50. V. THE STUDY OF SOCIOLOGY. By Herbert Spencer. Price, $1.50. VI. THE NEW CHEMISTRY. By Professor Josiah P. Cooke, of Harvard University. Illustrated. Price, $2.00. VII. ON THE CONSERVATION OF ENERGY. By Professor Balfour Stewart. Fourteen Engravings. Price, $1.50. VIII. ANIMAL LOCOMOTION; or, Walking, Swimming, and Flying. By Dr. J. B. Pettigrew, M.D., F.R.S. 119 Illustrations. Price, $1.75. IX. RESPONSIBILITY IN MENTAL DISEASE. By Dr. Henry Maudsley. Price, $1.50. X. THE SCIENCE OF LAW. By Professor Sheldon Amos. Price, $1.75. XI. ANIMAL MECHANISM; or, Aërial and Terrestrial Locomotion. By C. J. Marey, Professor of the College of France, Member of the Academy of Medicine, Paris. 117 Engravings. Price, $1.75. XII. HISTORY OF THE CONFLICT BETWEEN RELIGION AND SCIENCE. By John W. Draper, M.D., LL.D. Price, $1.75. XIII. THE DOCTRINE OF DESCENT AND DARWINISM. By Oscar Schmidt, Professor in the University of Strasburg. Price, $1.50. XIV. THE CHEMISTRY OF LIGHT AND PHOTOGRAPHY; in its Application to Art, Science, and Industry. By Dr. Hermann Vogel. One Hundred Illustrations. (_In press._) XV. FUNGI; their Nature, Influence, and Uses. By M. C. Cooke, M.A., LL.D. Edited by Rev. M. J. Berkeley, M.A., F.L.S. With 109 Illustrations. (_In press._) XVI. OPTICS. By Professor Lommel, University of Erlangen. (_In press._) THE INTERNATIONAL SCIENTIFIC SERIES. FUNGI: THEIR NATURE AND USES. BY M. C. COOKE, M.A., LL.D. EDITED BY THE REV. M. J. BERKELEY, M.A., F.L.S. NEW YORK: D. APPLETON AND COMPANY, 549 AND 551 BROADWAY. 1875. PREFACE BY THE EDITOR.