SCIENCE-'ADVEBTiaEMENTS 



Just Published 



Students' Manual 



To Accompany Dryer's High 

 School Geography 



171 pages. Price, 36 cents. 



With Loose Le2tf Binder, 72 cents. 



A series of fifty-seTen exercises in 

 Physical, Economic, and Regional 

 Geography for schools having little or 

 no equipment for geography study. 

 The work pertains to contour maps, 

 weather maps, staple crops, and in- 

 dustries, and is accompanied by out- 

 line maps, weather maps, and thought- 

 producing questions. The loose-leaf 

 binder makes it possible to use the 

 exeroiees in any order desired. 



AMERICAN BOOK COMPANY 



New York Cincinnati Chicago 



Country- 

 Life 



Education 

 Series 



Fungous Diseases of Plants 



By BENJAMIN MINGE DUGGAR, 

 Missouri Botanical Garden, St. Louis 



508 pages, illuslraled, $2.00 



Blight, rot, rust, mildew are common 

 enough names to the average person, yet 

 the nature of these diseases is not gener- 

 ally understood, 



Duggar's Fungous Diseases of Plants was writ- 

 ten to give the farmer, agricultural student 

 or anyone interested in plants, a clearer 

 idea of plant diseases and the most satis- 

 factory methods of treatment. Among 

 other discussions this book tells how to 



Make and apply sprays 



Prevent potato scab 



Control bitter rot of fruits 



Check sweet-corn wilt 



May me not send ])ou a detailed description? 



Ginn and Company 



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 Atlanta 



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UNIVERSITY OF CALIFORNIA 

 PUBLICATIONS 



The University of California issues publications in the 

 followin^r series among others t 



Agricultural Science Mathematics 



American Archaeology Pathology 



and Ethnology Philo^phy 



Botany Physiology 



Economics Psychology 



Geology Zoology 

 Memoirs of the University of California 



Bulletin and Publications of the Lick Observatory ;^ 



RECENT TITLES 



A Revision of the Tuberales of California, by Helen Mar- 

 garet Gilkey $.80 



Relationship of Equus to PUohippus Suggested by Char- 

 acters of a New Species from the Pliocene of Califor- 

 nia, by John C. Merriam 10 



The Simultaneous Administration of Pituitary and Thy- 

 mus to Growing Chicks, by Samuel S. Maxwell 05 



The Status of the Beavers of Western North America, 

 with a Consideration of the Factors in their Speciation 

 by Walter P. Taylor 85 



Notes on the Spiny Lobster (Panulirus Inlerruptus) of the 

 California Coast, by Benton M. Allen 15 



Notes on the Marine Fishes of California, by Carl L. Hubbs .15 



The Feeding Habits and Food of Pelagic Copepods and 

 the Question of Nutrition by Organic Substances in 

 Solution in the Water, by Calvin O. Esterly 15 



Complete list of titles and prices will be sent 

 on application 



THE UNIVERSITY PRESS - - - Berkeley, California 



Send for descripltve circulars and sample 

 pages 



PRINCIPLES OF 



STRATIGRAPHY 



BY 



AMADEUS W. GRABAU, S.M., S.D. 



PROFESSOR OF PALAEONTOLOGY IN 

 COLUMBIA UNIVERSITY 



Large Octavo, 1150 pages, with 254 illustrations in tiie text. 

 Cloth bound, price, S7.50. 



Send for descriptive circular 



A. G. SEILER & CO. 



PUBLISHERS 

 1224 Amsterdam Avenue NEW YORK, N. Y. 



