THe DHIVZRSITY OF CHICAGO PRESS 
Morphology of Gymnosperms. By John M. Coulter, Professor 
of Botany, and Charles J. Chamberlain, Assistant Professor 
of Botany in the University of Chicago. 
470° pages, 462 illustrations, 8vo, cloth; postpaid $4.22 
This work is a revised and enlarged edition of the book 
brought out by Professors Coulter and Chamberlain in 1901. 
Each of the seven great groups is here presented in detail, 
and a final chapter discusses the problem of phylogeny and points 
out the evolutionary tendencies. The extinct groups, notably 
the primitive “‘seed-ferns,”’ are now included for the first time; 
and vascular anatomy is fully recognized as a morphological 
subject of first importance. The entire presentation is thoroughly 
and systematically organized and arranged with a view to the 
greatest possible clearness. The illustrations are numerous and 
in large part original. 
Outlines of Geologic History with Especial Reference to North 
America: A Series of Essays Involving a Discussion of Geo- 
logic Correlation, Originally Presented before Section E of the 
merican Association of Science. Symposium Organized 0: 
Bailey Willis, Professorial Lecturer on Geology in the Unt- 
versity of Chicago. Compilation Edited by Rollin D. Salis- 
ytd Professor of Geographic Geology in the University of 
go. 
316 pages, 8vo, cloth; postpaid $1.66 
The series as a whole represents the successful execution of 
the plan on which all the monographs were based—namely, to 
formulate the principles of correlation as applied to the forma- 
tions of the various geologic periods. The evolution of floras 
and faunas has been traced with especial attention to environ- 
ment and correlation. As originally presented, the papers excited 
much interest and discussion. They embody the present state 
of knowledge and opinion concerning many of the fundamental 
problems of North American geology, and form an admirable 
supplement to earlier treatises and manuals. 
I2 
