THE UNIVERSITY OF CHICAGO 

 SCIENCE SERIES 



ThiB series recently established by the Trustees of the University owes its origin to a 

 feeling that there should be a medium of publication occupying a position between the 

 technical journals, with their short articles, and the elaborate treatises which attempt to 

 cover several or all aspects of a wide field. The volumes of the series will differ from the 

 discussions generally appearing in technical journals in that they will present the complete 

 results of an experiment or series of investigations which have previously appeared only 

 in scattered articles, if published at all. On the other hand they will differ from detailed 

 treatises by confining themselves to specific problems of current interest and in presenting 

 the subject in as summary a manner and with as little technical detail as is consistent 

 with sound method. They will be written not only for the speciaUst but also for the 

 educated layman. The size of the volumes will range from fifty to one hundred and fifty 

 pages. 



THE FIRST PUBLISHED VOLUME OF THE SERIES 



The Evolution of Sex in Plants. By John Merle Coolter, Head of 

 the Department of Botany in the University of Chicago, viii + 140 

 pages, small 12mo, cloth; 4«. net. 



In this first volume of the new "University of Chicago Science Series" Professor 

 Coulter, the editor of the Botanical Gazette and the author of numerous volumes on 

 botanical science, has given a presentation of the results of research showing that aU 

 reproduction is the same in its essential features and all methods of reproduction are 

 natural responses to the varying conditions encountered by plants in their life histories. 

 Sex reproduction, the author says, is simply one kind of response, the sex feature not 

 being essential to reproduction, but securing something in connection with the process. 

 Various phases of the subject discussed include the evolution of sex organs, the alternation 

 of generations, the differentiation of sexual individuals, and parthenogenesis. The last 

 chapter, which offers a theory of sex, reviews the more prominent facts set forth in 

 preceding parts of the volume, and serves both as a summary and a working hypothesis. 



OTHER VOLUMES IN PREPARATION FOR EARLY PUBLICATION 



The Origin of the Earth. By Thomas C. Chamberlin, Head of the 

 Department of Geology in the University of Chicago. 



The Isolation and Measurement of the Electron. By Robert 

 Andrews Millikan, Professor of Physics in the University of Chicago. 



Finite CoUineation Groups. By Hans F. Blichfeldt, Professor of 

 Mathematics in Leland Stanford Junior University. 



OTHER VOLUMES PLANNED AND IN PREPARATION 

 The Evolution of Reptiles. By Samuel Wendell Williston. 

 Food Poisoning. By Edwin Oakes Jordan. 

 The Problem of Individuality in Organisms. By Charles Manning 



Child. 

 The Development of a New System of Organic Chemistry, 



Based on Dissociation Concepts. By John Ulric Nep, with 



the co-operation of J. W. E. Glattfeld. 

 The Living Cycads. By Charles Joseph Chamberlain. 

 Mechanics of Delayed Grermination in Seeds. By William Crocker. 

 The Rigidity of the Earth and of Materials. By Albert A. 



Michelson. 

 The Problem of Fertilization. By Frank R. Lillie. 

 Linear Integral Equations in General Analysis. By Eliakiu 



Hastings Moore. 



The University of Chicago Press 



The Cambridge University Press 



Agents for the British Empire 



London, Fetter Lane 



