Contents of Volume XVI 



NUMBER I 



PACE 



Linos A and Its Rocks. Henry S. Washington . . . . . i 

 The Post- Jurassic Igneous Rocks of Southwestern Nevada. Sid- 

 ney H. Ball 36 



The Variations of Glaciers, XII. Harry Fielding Reid . . 46 



Flaxman Island, A Glacial Remnant. Ernest DeKoven Lefl&ngwell 56 

 A Note on the Geology of the Coso Range, Inyo County, Cal. 



John A. Reid .......... 64 



A Natural Bridge due to Stream Meandering. V. H. Barnett . 73 

 Striations in Gravel Bars of the Yukon and Porcupine Rivers, 



Alaska. V. H. Barnett 76 



Causes of Permo-Carboniferous Glaciation. W. M. Davis . . 79 



Reviews ............ 83 



Recent Publications . . . . . . . . .87 



NUMBER II 



The Triassic Portion of the Shinarump Group, Powell. Whitman 



Cross ........... 97 



A Pyrrhotitic Peridotite from Knox County, Maine — A Sulphide 



Ore of Igneous Origin. Edson S. Bastin .... 124 



The Cotylosauria. S. W. Williston ...... 139 



The Lower Huronian Ice Age. A. P. Coleman . . .149 



Studies for Students: Relations Between Climate and Terres- 

 trial Deposits. Joseph Barrell ...... 159 



Reviews 191 



NUMBER III 



Geology of the Haystack Stock, Cowles, Park County, Mon- 

 tana. William H. Emmons . . . . . . .193 



Some Igneous Rocks from the Ortiz Mountains, New Mexico. 



I. H. Ogilvie .......... 230 



