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Just Published 



Students' Manual 



To Accompany Dryer's High 

 School Geography 



171 pages. Price, 36 cents. 



With Loose Leaf Binder, 72 cents. 



A series of fifty-seven exercises in 

 Physical, Eoonomio, and Regional 

 Geography tor schools having little or 

 no equipment for geography study. 

 The work pertains to contour maps, 

 weather maps, staple crops, and in- 

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 producing questions. The loose-leaf 

 binder makes it possible to use the 

 exercises in any order desired. 



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Country 

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Soil Fertility and Per- 

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By CYRIL GEORGE HOPKINS, of the Uni- 

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8vo, cloth, 653 pages. $2.25 



"Skinning the land" is a proceeding 

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The American Academy 

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Just issued. Proceedings, Vol. 61, Nos. 7, 8 and 9. 



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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 the text. 

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