The University of Chicago 

 Science Series 



EDITORIAL COMMITTEE 



ELIAKIM HASTINGS MOORE, Chairman 



JOHN MERLE COULTER PRESTON KYES 



The following volumes are bound uniformly in maroon cloth, 

 small i2mo: 



The Evolution of Sex in Plants. By JOHN Merle Coulter, x+140 



pages. $1.25, postpaid $1.35. 

 Individuality in Organisms. By CHARLES MANNING Child, x+212 



pages. $1,50, postpaid $1.65. 

 The Origin of the Earth. By Thomas C. Chamberlin. xii-l-272 pages. 



$1.75, postpaid $1.85. 

 Finite Collineation Groups. By Hans F. Blichfeldt. xii + 194 pages. 



$1.50, postpaid Si. 60. 

 A Chemical Sign of Life. By Shiro Tashiro. x+142 pages. $1.25, 



postpaid $1.35- 

 The Biology of Twins. By HORATiO Hackett Newman. x+186 



pages. $1.50, postpaid $1.60. 

 The Physiology of Twinning. By HORATiO Hackett Newman. x+232 



pages. $1.75, postpaid $1.85. 

 Food Poisoning. By Edwin Oakes JORDAN. viii+ii6 pages. $1.25, 



postpaid $1.35. 

 The Electron: Its Isolation and Measurement, and the Determination of Some 



of Its Properties. By Robert Andrews Millikan. xii-l-268 pages. 



$1.75, postpaid $1.85. 

 The Living Cycads. By Charles Joseph Chamberlain, xiv+172 



pages. $1.50, postpaid $1.60. 

 Problems of Fertilization. By Frank R. LiLLlE. xii+278 pages. Si. 75, 



postpaid Si. 85. 

 The Origin and Development of the Nervous System from a Physiological 



Viewpoint. By Charles M. Child, xvii+296 pages. $1.75, 



postpaid $1.85. 



IN PRESS 

 The Antiquity of Disease. By ROY L. Moodie. 

 The Story of the Maize Plant. By PAUL Weatherwax. 



VOLUMES FOR LATER PUBLICATION 

 Mechanics of Delayed Germination in Seeds. By W. Crocker. 

 Black-Body Radiation. By Charles E. Mendenhall. 

 The Rigidity of the Earth and of Materials. By A. A. MiCHELSON'. 

 Linear Integral Equations in General Analysis. By Eliakim Hastings Moore. 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO ..... ILLINOIS 



