TWENTIETH CENTURY TEXT-BOOKS. TEXT-BOOKS OF ZOOLOGY. By DAVID STARR JORDAN, President of Leland Stanford Jr. University; VERNON LYMAN KELLOGG, Professor of Entomology; HAROLD HEATH, Assistant Professor of Invertebrate Zoology. Animal Studies. A compact but complete treatment of elementary zoology, especially prepared for institutions of learning that prefer to find in a single book an ecological as well as morphological survey of the animal world. Cloth, $1.25 net. Animal Life. I2mo. An elementary account of animal ecology—that is, of the relations of animals to their surroundings. It treats of animals from the standpoint of the observer, and shows why the present conditions and habits of animal life are as we find them. It explains how the infinite variety of form and nature is the inevitable outcome of the struggle for existence. 12mo. Cloth, $1.20 net. Animal Forms. This book deals in an elementary way with animal morphology. It describes the structure and life processes of animals, from the lowest, simplest, one-celled creations to the highest and most complex, discussing therewith the important subject of division of labor. Cloth, $1.10 net. Animals. 12mo. This consists of "Animal Life" and "Animal Forms" bound in one volume, and groups the entire body of material needed for an elementary course in zoology in a handy and compact volume. 12mo. Cloth, $1.80. Animal Structures. A laboratory guide in the teaching of elementary zoology. I2mo. Cloth, 50 cents net. TWENTIETH CENTURY TEXT-BOOKS. Elementary Chemistry. By ROBERT HART BRADBURY, A.M., Ph.D., Teacher of Chemistry in the Philadelphia Central Manual Training - School; formerly Lecturer on Physical Chemistry in the Department of Philosophy, University of Pennsylvania. 12mo. 12mo. Cloth, $1.00. With Laboratory Manual, $1.25. There is no dearth of text-books of Chemistry, but all seem to have fallen short in some essential particulars, and fail to meet the actual requirements of class work. This book attempts to remedy such faults. It is, therefore, thoroughly fresh in material and treatment. It is not a compilation from existing manuals, but the result of a survey of the recent literature of the science; yet nothing has been introduced that has not been tested practically in the class-room and found to be available. Special effort has been made to attain precision and clearness of statement. The theoretical and general portions of the subject are not hurled at the student in an overwhelming and unintelligible mass. The introduction of each generalization is deferred until a particular case of it has been encountered. Formula and equations are not introduced until the student is able to receive them, and the atomic theory is reserved until the student is able to understand it. NOTE.-This text-book was scarcely off the press when it was adopted in Erasmus Hall High School, Brooklyn. Manual Training High School, Brooklyn. High School, Hartford, Conn. A Laboratory Manual of Chemistry. By ROBERT HART BRADBURY, A.M., Ph.D. Cloth, 45 cents. The laboratory guide aims to supply an outline of work which can be completed by the average student in one school year. Constant questions, problems, and exercises serve to prevent the student's work from becoming thoughtless or mechanical. D. APPLETON AND COMPANY, NEW YORK. BOSTON. CHICAGO. LONDON. LE CONTE'S GEOLOGY. A New Revised Edition. New Data. Latest Facts Elements of Geology A Text-Book for Colleges and for the General Reader By JOSEPH LE CONTE, LL.D. Professor of Geology and Natural History in the University of California. With upward of 1,000 Illustrations. 8vo. Cloth, $4.00 Edition of 1903, Revised and Partly Rewritten By HERMAN L. FAIRCHILD, B.S. Professor of Geology, University of Rochester, N. Y.; Secretary of the Geological Society of America The best known and most widely circulated work of the late Dr. Joseph Le Conte is the "Elements of Geology," which for many years has been the standard text-book on the subject in colleges and universities. The work was revised and enlarged in 1896 by the author, with the addition of new plates and illustrations. A further thorough revision of the book was about to be undertaken at the time of the author's death. This event necessitated other arrangements, and the work was put into the hands of Prof. H. L. Fairchild, of the University of Rochester, N. Y., and Secretary of the Geological Society of America. The result shows that Professor Fairchild was eminently well fitted for the task. A large portion of the earlier chapters of the book have been rewritten to bring the subject into harmony with accepted facts and theories in geologic science at the present stage of development. D. APPLETON AND COMPANY, NEW YORK. BOSTON. CHICAGO. LONDON. TWENTIETH CENTURY TEXT-BOOKS OF BOTANY. By JOHN M. COULTER, A.M., Ph.D., A Text-Book of Botany. Plant Relations. Cloth, $1.10. 12mo. Illustrated. $1.25. A First Book of Botany. I2mo. "Plant Relations" is the first part of the botanical section of Biology, and, as its title indicates, treats what might be termed the human interesis of plant life, the conditions under which plants grow, their means of adaptation to environments, how they protect theinselves from enemies of various kinds in their struggle for existence, their habits individually and in family groups, and their relations to other forms of life-all of which constitute the economic and sociological phases of plant study. Plant Structures. A Second Book of Botany. Cloth, $1.20. I2mo. This volume treats of the structural and morphological features of plant life and plant growth. It is intended to follow " Plant Relations," but may precede this book, and either may be used independently for a half-year's work in botanical study. Plant Studies. $1.25. An Elementary Botany. 12mo. Cloth, This book is designed for those schools in which there is not a sufficient allotment of time to permit the development of plant Ecology and Morphology as outlined in "Plant Relations" and "Plant Structures," and yet which are desirous of imparting instruction from both points of view. Plants. A Text-Book of Botany. 12mo. Cloth, $1.80. Many of the high schools as well as the smaller colleges and seminaries that devote one year to botanical work prefer a single volume covering the complete course of study. For their convenience, therefore, "Plant Relations and "Plant Structures have been bound together in one book, under the title of "Plants." Analytical Keys to Flowering Plants. 12mo. Limp Cloth. Northern States. By PROFESSOR Coulter. 25C. Pacific Slope. By PROF. W. L. JEPSON, University of California. 45C. Rocky Mountain Regions. By PROF. AVEN NELSON, University of Wyoming. 45c. These Keys may be used with any text-book of botany, but they have references to the text of Professor Coulter's books. A Laboratory Manual of Botany. By OTIS W. CALDWELL, Ph.D., State Normal School, Charleston, Ill. 50c. D. APPLETON AND COMPANY, NEW YORK. BOSTON. CHICAGO. LONDON. FOR NATURE-LOVERS AND ANGLERS. Familiar Fish: Their Habits and Capture. A Practical Book on Fresh-Water Game Fish. By EUGENE MCCARTHY. With an Introduction by Dr. David Starr Jordan, President of Leland Stanford Junior University, and numerous IllusCloth, $1.50. trations. 12mo. This informing and practical book describes in a most interesting fashion the habits and environment of our familiar freshwater game fish, including anadromous fish like the salmon and sea trout. The life of a fish is traced in a manner very interesting to nature-lovers, while the simple and useful explanations of the methods of angling for different fish will be appreciated by fishermen old and young. As one of the most experienced of American fishermen, Mr. McCarthy is able to speak with authority regarding salmon, trout, ouananiche, bass, pike, and pickerel, and other fish which are the object of the angler's pursuit. The book is profusely illustrated with pictures and serviceable diagrams. "The book compresses into a moderate space a larger amount of interesting knowledge about fish and fishing than any other volume that has appeared this season."-Chicago Tribune. "It gives, in simple language and illustrations, much that it will be profitable for our boys to know before they begin to lay out their money, and much information that will be useful to them when they begin to go farther afield than their own immediate local waters."-Outing. informing books that we "One of the handsomest, most practical, most know. The author treats his subject with scientific thoroughness, but with a light touch that makes the book easy reading. The book should be the companion of all who go a-fishing."-New York Mail and Express. Ꭰ . APPLETON AND COMPANY, NEW YORK. |