CONTENTS 



Page. 



Detection of Submarines. By Harvey C. Hayes, Ph.D i 



The Deep Kansan Pondings in Pennsylvania and the Deposits 



Therein. By Edward H. Williams, Jr., Sc.D., LL.D 49 



The Parallaxes of Fifty Stars (Second List) Determined at 



Sproul Observatory. By John A. Miller, Ph.D., with the 



cooperation of John H. Pitman and Hannah B. Steele. . . 85 

 The Components and Colloidal Behavior of Plant Protoplasm. 



By D. T. MacDougal and H. A. Spoehr 150 



The Phosphorescence of Renilla. By G. H. Parker 171 



The Einstein Theory. By E. P. Adams 17^ 



Slav and Celt. By J. Dyneley Prince 184 



Products of Detonation of TNT. By Charles E. Munroe 



and Spencer P. Howell 194 



The Reefs of Tutuila, Samoa, in their Relation to Coral Reef 



Theories. By Alfred Goldsborougii Mayor 224 



Golgotha. By Paul Haupt 237 



The High Voltage Carona in Air. By J. B. Whitehead 245 



A New Theory of Polynesian Origins. B. Roland B. Dixon. 261 

 Correlation of Shape and Station in Fresh-water Mussels 



(Naiades). By A. E. Ortmann 269 



The Distribution of Land and Water on the Earth. By Harry 



Fielding Reid 313 



The Transient Process of Establishing a Steadily Alternating 



Current on a Long Line, from Laboratory Measurements on 



an Artificial Line. By A. E. Kennelly and U. Nabeshima 325 

 U. S. Navy MV Type of Hydrophone as an Aid and Safeguard 



to Navigation. By H. C. Hayes 371 



Interrelation of the Fossil Fuels. IV. By John J. Stevenson 405 

 Geographic Aspects of the Adriatic Problem. By Douglas 



Johnson 512 



Certain Aspects of Recent Spectroscopic Observations of the 

 Gaseous Nebulae which Appear to Establish a Relationship 



between them and the Stars. By W. H. Wright 517 



ill 



