SCIENCE 



New Series. 

 Vol. IV. No. 99. 



Friday, November 20, 1896. 



Single Copies, 15 cts. 

 Annual Sdbsckiption, $5.00 



The JVIacmillan Company's New Volumes 



COLUMBIA UNIVERSITY BIOLOGICAL SERIES. No. IV. 



EDITED BY 



Henry Fairfield Osborn, 



Da Costa Professor of Biology in Columbia College. 



The Cell in Development and Inheritance. 



By Edmund B. Wilson, Ph. D., 



Professor of Invertebrate Zoology, Columbia University. 

 WITH 142 ILLUSTRATIONS. 8V0, CLOTH, $3.00 NET. 



This volume contains a presentation, in a simple form, of 

 the present state of our knowledge regarding cell-organiza- 

 tion and its bearings upon the phenomena of development. 



The point of view and mode of treatment differs widely 

 from that taken in Hertwig's recent work on the Cell. The 

 cell is treated primarily as the basis or substratum of inheri- 

 tance. Attention is therefore directed at the outset espe- 

 cially to the germ-cells— to their structure and maturation, 

 their union in fertilization, to the phenomena of cell-divis- 

 ion, and to the earlier stages of embryological development 

 as illustrating the problem of cell-dynamics. 



These chapters are used as an introduction to a more gen- 

 eral account of the cell, considered both as an independent 

 organism and as a unit of a more complex structure and ac- 

 tion. The organization of the cell is fully described, the 

 functions of its various parts critically discussed, and a re- 

 view given of modern theories of protoplasmic structure and 

 action. The latter part of the work is devoted mostly to re- 

 cent discoveries in experimental embryology in their bear- 

 ing on the current theories of Weissman, Hertwig and others 

 regarding the essential nature of development, differentia- 

 tion and regeneration. The volume is fully illustrated. 



No. I. From the Greeks to Darwin 



The Development of the Evolution Idea. By 



Heney Faiefield Osboen, Sc.D, Second Edi- 

 tion, 8vo, cloth, $2.00 net. 



" A somewhat new and very interesting field of inquiry is 

 opened in this work, which is devoted to demonstrating 

 that the doctrine of Evolution, far from being a child of the 

 middle of the nineteenth century, of sudden birth and 

 phenomenally rapid growth, as it is by many supposed to 

 be, has really" been in men's minds for ages. It appears in 

 the germ in the earliest Greek philosophy; in vigorous 

 childhood in the works of Aristotle; in adolescence at the 

 closing period of the last century, and reaches full-grown 

 manhood in our own age of scientific thought and indefati- 

 gable research." 



ALBEADY PUBLISHED IN THE SAME SERIES. 



No. II. Amphioxus and the Ancestry of 

 the Vertebrates. 



By Aethue Willey, B.Sc. Balfour Student of 

 the University of Cambridge, with a preface by 

 Heney Faiefield Osboen, 8vo, cloth, $2.50 net. 



"This important monograph will be welcomed by all 

 students of zoology as a valuble accession to the literature of 

 the theory of descent. More than this, the volume bears in- 

 ternal evidence throughout of painstaking care in bringing 

 together, in exceedingly readable form, all the essential de 

 tails of the structure and metamorphosis of Amphioxus as 

 worked out by anatomists and embryologists since the time 

 of Pallas, its discoverer. The interesting history of the 

 changes it undergoes during metamorphosis,, especially its 

 singular asymmetry, is clearly described, and ingenious ex- 

 planations of the phenomena are suggested.— Peof. John A. 

 Ryder, in the American Naturalist. 



No. III. Fishes, Living and Fossil. 



AN INTBODUCTORY STUDY. 



By BASHFORD DEAN, Ph.D., COLUMBIA, 



Instructor in Biology, Columbia University. 



8V0, CLOTH, $2.50 NET. 



This work has been prepared to meet the needs of the general students for a concise knowledge of the Fishes. It con- 

 tains a review of the four larger groups of the strictly flshlike forms. Sharks, Chimaeroids, Teleostomes and the Dipnoans, 

 and adds to this a chapter on the Lampreys. It presents in figures the prominent members, living and fossil, of each 

 group ; illustrates characteristic structures ; adds notes upon the important phases of development, and formulates the 

 views of investigators as to relationships and descent. The aim of the book has been mainly to furnish the student with a 

 well-marked ground-plan of Ichthyology, to enable him to better understand special works, such as those of Smith Wood- 

 ward and Gunther. The work is fully illustrated, mainly from the writer's original pen-drawings. 



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