CONTENTS 



The Problem of Adaptation as Illustrated by the Fur Seals of 

 the Pribilof Islands. By George H. Parker i 



The Large Fruited American Oaks. By William Trelease. . 7 



The Swedes, Governor Printz and the Beginning of Pennsyl- 

 vania. By Thomas Willing Balch 12 



General Results of the Work in Atmospheric Electricity 

 Aboard the Carnegie, 1909-1914. By L. A. Bauer 14 



The Rights and Duties of Neutralized Territory. By Charle- 

 magne Tower 18 



The Pronouns and Verbs of Sumerian. By J. Dyneley 

 Prince 27 



The Hall and Corbino Effects. By E. P. Adams 47 



Some Results from the Observation of Eclipsing Variables. 

 By Raymond S. Dugan 52 



Some Present Needs in Systematic Botany. By L. H. Bailey. 58 



The Variable Stars, TF, TW, TX Cassiopeise and T Leonis 

 Minoris. By R. J. McDiarmid 66 



An Interpretation of SteriHty in Certain Plants. By E. M. 

 East 70 



Additions to the Fauna of the Lower Pliocene Snake Creek 

 Beds (Results of the Princeton University 1914 Expedition 

 to Nebraska). By William J. Sinclair 73 



Explorations Over the Vibrating Surfaces of Telephonic 

 Diaphragms Under Simple Impressed Tones. By A. E. 

 Kennelly and H. O. Taylor 96 



The Ruling and Performance of a Ten Inch Diffraction Grat- 

 ing. By A. A. Michelson 137 



The Constitution of the Hereditary Material. By T. H. 

 Morgan 143 



Spontaneous Generation of Heat in Recently Hardened Steel. 

 By Charles F. Brush 154 



Relationships of the White Oaks of Eastern North America. 

 With an Introductory Sketch of their Phylogenetic History. 

 By Margaret V. Cobb 165 



A New Form of Nephelometer. By J. T. W. Marshall and 

 H. W. Banks, 30 176 



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