THE UNIVERSITY OF CHICAGO PRESS 
The Evolution of Sex in Plants. (The University of Chicago Science 
Series.) By John Merle Coulter, Head of the Department of Botany 
in the University of Chicago. 
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 fife 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. 
viii+140 pages, small 12mo, cloth.; 4s. net. 
In preparation for early publication in the same series with Professor 
Coulter’s book are volumes on The Origin of the Earth, by Professor 
Thomas C. Chamberlin, Head of the Department of Geology, and The 
Isolation and Measurement of the Electron, by Professor Robert 
Andrews Millikan, of the Department of Physics. 
Animal Communities in Temperate America. A Study in Animal 
Ecology. (Bulletins of the Geographic Society of Chicago.) By Victor 
Ernest Shelford, Assistant Professor of Zoology in the University of 
Illinois. 
This volume by Professor Shelford presents the principles of field ecology, illustrated 
by the more widely distributed animal habitats of the eastern half of temperate North 
America, and the aquatic habitats of a much larger territory. Six chapters deal with 
general principles. 
In several chapters animal communities of lakes, streams, swamps, forests, prairies, 
and various soils and topographic situations are considered from the point of view of 
modern dynamic ecology. A very valuable feature of the book is the three hundred figures 
of widely distributed animals chosen to represent the chief types of animal communities 
and their characteristic modes of life. 
xiv + 362 pages. 8vo, cloth; l'Os. net. 
The Cambridge University Press 
Agents for the British Empire 
London, Fetter Lane 
BOOKS ON FLIES AND DISEASE 
Flies in Relation to Disease: Non Blood-sucking Flies. By 
G. S. Geaham-Smith, M.D. Second edition. Revised and enlarged. With 27 plates, 
32 text figures, and 20 charts. Demy 8vo. 12s 6 d net. Cambridge Public Health 
Series. 
Flies in Relation to Disease: Blood-sucking Flies. By Edward 
Hindle, B.A., Ph.D. With 83 illustrations. Demy 8vo. 12s 6 d net. Cambridge 
Public Health Series. 
House Flies and how they spread Disease. By C. G. Hewitt, D.Sc. 
With 20 illustrations. Royal 16mo. Cloth Is net. Leather 2s 6 d net. Cambridge 
Manuals Series. 
The House-Fly : Its Structure, Habits, Development, Relation 
to Disease, and Control. By C. G. Hewitt, D.Sc. With three coloured 
plates, 101 illustrations, and a map. Demy 8vo. 15s net. Cambridge Zoological 
Series. 
Typical Flies. A Photographic Atlas of Diptera, including Aphaniptera. 
By E. K. Pearce. With 155 photographs. Royal 8 vo. Paperboards. 5s net. 
CAMBRIDGE UNIVERSITY PRESS, FETTER LANE, LONDON 
C. F, CLAY, Manager 
