THE UNIVERSITY OF CHICAGO 
SCIENCE SERIES 
This 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 specialist 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 Coulter, Head of 
the Department of Botany in the University of Chicago, viii + 140 
pages, small 12mo, cloth; 4s. 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 all 
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 Collineation 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 Germination 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 Eliakim 
Hastings Moore. 
The University of Chicago Press 
The Cambridge University Press 
Agents for the British Empire 
London, Fetter Lane 
