DEVELOPMENT AND 
INHERITANCE. 
By EDMUND B. WILSON, Ph.D., LL.D., 
Professor of Zoslogy, Columbia University. 
371 pages. 142 Illustrations. Price, $3.50 net. 
“In the highest degree fascinating... .. Itisa tion to read the larger treatises on botany or histology 
matter for. congratulation that Professor Wilson has in which the modern views on the structure and funce 
given us in our own speech a book which is second | tions of the cell are to be found in detail... In 
to none in the clear and comprehensive manner in the present volume they will find an admirable expo- 
which the facts of cell-structure and division are set sition of the knowledge that has been acquired during 
forth, and the masterly way in which the principal the last twenty years.” — London Lancet. 
theories are stated and criticised.” — Nature. 
“Tt certainly takes rank at once among the most | . “One of the very best scientific manuals publishea 
important biological works of the period.” in America. . . . A noteworthy characteristic of the 
book is its thoroughness. . . . Students and inves- 
— Sctence. ‘ : . 
tigators of biology, in whatever department they may 
“We heartily recommend this book. There are be working, ought to be familiar with this important 
many practitioners who have neither time nor disposi- | work.” — New York Nation. 
VOL. V. THE FOUNDATIONS OF ZOOLOGY. 
By WILLIAM KEITH BROOKS, 
Professor of LZoslogy, Johns Hopkins University. 
8vo. Cloth. viii + 339 pages. Price, $2.50 net. 
“A book that will live as a permanent addition to much as to either, for it is full of that fundamental 
the common sense of science. It belongs to literature wisdom about realities which alone is worthy of the 
as well as to science. It belongs to philosophy as name of philosophy.” — Sczence. 
VOL. VI. THE PROTOZOA. 
By GARY N. CALKINS, Ph.D., 
Instructor in Loblogy, Columbia University 
8vo. Cloth. 365 pages. Price, $3.00 net. 
The object of this volume is to set forth the main characteristics of the Protozoa without undertaking an 
exhaustive description. It is intended for students and for general readers who wish to know what the Pro- 
tozoa are, and what their relations are to current biological problems. In the first few chapters of the book 
the Protozoa are treated as a phylum of the animal kingdom. A short historical sketch leading up to the 
present systems of classification is followed by a general description of the group, touching upon some of the 
more special subjects, such as mode of life, motion, excretion, respiration, reproduction, colony-formation, 
encystment, etc., and this is followed by more general subjects dealing with the Protozoa in relation to man 
and other animals; e.g. their sanitary aspects, parasitism, symbiosis, etc. 2 
In the final chapter the Protozoa are dealt with from the standpoint of phylogeny. Theories as to the 
origin of life, spontaneous generation, and the relations of the classes of Protozoa to one another are con- 
sidered, and the volume ends with a discussion of the various views regarding the origin of the Metazoa from 
the Protozoa. 
VOL. VII. REGENERATION. 
By THOMAS HUNT MORGAN, 
Professor of Biology, Bryn Mawr College, 
Author of ‘‘THE DEVELOPMENT OF THE FROG’S EGG.” 
VOL. VII. AN INTRODUCTION TO COMPARA- 
TIVE NEUROLOGY. 
By OLIVER S. STRONG, Ph.D. 
THE MACMILLAN COMPANY, 66 Fifth Avenue, New York. 
