The Dynamics of Living Matter

Introduction. Chapters: I. General Sketch of the Cell. II. Cell Division. III. The Germ Cells. I' Fertilization of the Ovum. V. Reduction of the Chromosomes, Oogenesis and Spermatogenesis. VI. Some Problems of Cell Organization VII. Some Aspects of Cell Chemistry and Cell Physiology. VIII. Cell- Division and Development. IX. Theories of Inheritance and Development. " During the few years which have elapsed since the appearance of the first edition of Professor Wilson's book on the cell, the rapid accumulation of new facts has resulted in the modification, in many important respects, of the views which were entertained concerning many cell phenomena even so lately as five years ago. Hence, though the volume before us is issued as a second edition, it has not only been considerably enlarged, but also much of the original matter has been replaced to make room for new treatment which shall more faithfully reflect the attitude of cytologists toward the problems which confront them at the present time. And we may fairly say, that the author's efforts have not only been largely successful, but they have resulted in the production of one of the best works which it has been our good fortune to meet with for a long time. The whole subject is handled in an easy and masterly fashion, and the reader is enabled readily to grasp the leading facts and to obtain a clear insight into the nature of the chief questions of cytological importance. "- J. B. FARMER, Nature, 1901.

By WILLIAM KEITH BROOKS, Ph.D., LL.D., Professor of Zoology in the Johns Hopkins Uni- versity. 339 pages. Price $2.50, net. Contents. — Lectures I. Introductory. II. Huxley and the Problem of the Naturalist. Ill Nature and Nurture. IV. Lamarck. V. Migration in its bearing on Lamarckism. VI (i) Zoology and the Philosophy of K volution. VI. (n) An Inherent Error in the Views of Gallon and Weismann on Inheritance. VII. Gallon and the Statistical Study of Inheritance. VIII. Darwin and the Origin of Species. IX. Natural Selection and the Antiquity of Life. X Natural Selection and Natural Theology. XI. Paley and the Argument from Contrivance. XII. The Mechanism of Nature. XIII. Louis Agassiz and George Berkeley.

" It is a peculiar pleasure to a British naturalist to find the Darwinian principle illustrated and defended with s'ich remarkable force and success by a distinghished American zoologist." — Nature, October 18, 1900. " Brooks' lectures on ' The Foundation of Biology 'constitute a book that will live as a permanent addition to the common sense of science. It belongs to literature as well as to science. It belongs to philosophy as much as to either, for it is full of that fundamental wisdom about realities which alone is worthy of the name of philosophy." — Science, April 14 1899.

" Without copious extracts it is impossible to do justice to this masterly presentation of the subject. The chapter abounds in aphorisms as indeed do other portions of the work ; and these alone, if serially collected with their contexts, would make a valuable little handbook for the student of biology." — Popular Science Monthly. June, 1899. By GARY N. CALKINS, Ph.D., Professor of Invertebrate Zoology, Columbia University ; Biolo- gist, State Cancer Laboratory, Buffalo, N.Y. 347 pages. Price, $3.00, net.

A General Introduction to the Study of Protozoa. IN NINE CHAPTERS. I. Introductory. With historical review ; modern classification ; animals and plants, and generation de novo. II General Sketch. Including general morphology ; general physiology, and economic aspects. III. The Sarcodina. Shells and tests, and special locomotor and other organs. IV. The Mastigophora. General and special organization. V The Spi"ozoa. General and special organization ; mode of life, and relations VI The Infusoria. Gen- eral organization of ciliata and suctoria. VIII. Sexual Phenomena. Significance of conjugation and rise of sex. VIII. The Protozoan Nucleus. Special Morphology The phylogenetic relations of the nucleus and mitotic figure. IX. Some Problems in the Physiology of the Protozoa. The phenomena of digestion, respiration, secretion, and irritability.

" The author has not aimed at putting forward an exhaustive, severely scientific treatise upon the group in question. His work may be described rather as a simple and intelligible introduction to the study of the Protozoa and of the many fascinating biological problems connected with, or illustrated by. this subdivision of the animal kingdom, in such a way as to awaken the interest of the beginner, no less than to strengthen the hands of the expert " — Nature.

By THOMAS HUNT MORGAN, Professor of Experimental Zoology, Columbia University. 316 pages; 66 illustrations. Pricejg3.oo.net. Contents. — I General Introduction. II. The External Factors of Regeneration in Animals. III. The Internal Factors of Regeneration in Animals. IV. Regeneration in Plants. V. Regeneration and Liability to Injury. VI. Regeneration of Internal Organs. Hypertrophy. Atrophy. VII. Physiological Regenera- tion. VIII. Self-division and Regeneration Budding and Regeneration. Autotomy. Theories of Autotomy. IX. Grafting and Regeneration X. The Origin of New Cells and Tissues. XI. Regeneration in Egg and Embryo. XII. Theories of Development. XIII Theories of Regeneration. XIV. General Considerations and Conclusions.

" The high character of the Columbia University Biological Series is more than maintained by its latest publication — Professor Morgan's book on ' Regeneration." It is rare indeed to find a book which contains so large an amount of research work and which is at the same time of such general interest and importance. This is no mere discription of the peculiar and bizarre ' dime museum experiments' of experimental zoology, but rather a thorough treatise on some of the more important methods and results of the new morphology.

"In this work the author has been one of the most productive and at the same time one of the most careful investigators. He saw, as apparently few others did, that the development of fragments of eggs and embryos was at bottom the same problem as the regeneration of parts of adult organisms, and during the past ten years he and his pupils have done a surprising amount of work on the regeneration of embryos and adults. There is probably no other living man so well fitted to treat this subject." — Science, April, 1902.

Vol. IV. The Cell in Development and Inheritance. WILSON . . 3.50, net Vol. IX. Structure and Habits of Ants. Professor W. M. WHEELER, of the American Museum of Natural History, Lectures delivered la 1905 Vol. X. Behavior of the Lower Organisms. Professor H. S. JENNINGS, of the University of Pennsylvania. Lectures to be delivered in 1906. Pay by check or money postal order. One dollar is equivalent to four shil- lings, four marks, five francs.