INDEX TO VOLUME X 93 i 



PAGE 



Oil- and Gas-Producing Rocks of Ohio. J. A. Bownocker - 822 



Ore Deposits, Genesis of. Review. H. Foster Bain - - 434 



Paleontological Collections in the Geological Department of the American 



Museum of Natural History, The. Edmund O. Hovey - - - 252 



Paleontological Notes. E. C. Case - 256 



Paleozoic Formations of Kansas, Revised Classification of the Upper. Charles 



S. Prosser ------ 703 



Pegmatite and Tourmaline Bunches in the Stone Mountain Granite of Georgia, 



On the Occurrence of Aplite. Thomas L. Watson - - - 186 



Peneplain, Baselevel, Grade and. W. M. Davis ------ 77 



Petrographical Microscope, A New Combination Wedge for Use with the. 



Fred Eugene Wright --------- 33 



Petrography in the Nineteenth Century, The Development of Systematic. 



Whitman Cross --------- 33 I »45 I 



Physiographic Features of the Klamath Mountains. F. M. Anderson - - 144 

 Physiography, Boston Mountain. Oscar H. Hershey - - - - - 160 



Pirsson, Louis V., Henry S. Washington, Whitman Cross, Joseph P. Iddings, 



A Quantitative Chemico-Mineralogical Classification and Nomen- 

 clature of Igneous Rocks -------- 555 



Pjettursson, Helgi, Moraener i den Islandska Palagonitformation. Review by 



J. A. Udden ----- 218 



Pleistocene Stratigraphy of the Coast of Southern California, The Marine 



Pliocene and. Delos Arnold and Ralph Arnold - - - - 117 

 Pliocene and Pleistocene Stratigraphy of the Coast of Southern California. 



Delos Arnold and Ralph Arnold - 117 



Preparation of a Geologic Map, The. Edwin C. Eckel - - - - . 59 



Preston, H. L., The Franceville (El Paso County, Colorado), Meteorite - - 852 



Preston, H. L., Niagara Meteorite - - 5 X 8 



Profile of Equilibrium of the Subaqueous Shore Terrace, Development of the. 



N. M. Fenneman ---------- 1 



Prosser, Charles S., Note on the Sunbury Shale ------ 328 



The Sunbury Shale of Ohio ------ - 262 



Pterodactyl, On the Skull of Nyctodactylus, An Upper Cretaceous. S. W. 



Williston ----- 520 



Publications, Recent ----- 114,221,329,450,551,799,922 



Purdue, A. H. Review: Evolution of the Northern Part of the Lowlands 



of Southeastern Missouri. By C. F. Marbut 919 



Quantitative Chemico-Mineralogical Classification and Nomenclature of 

 Igneous Rocks, A. Whitman Cross, Joseph P. Iddings, Louis V. 

 Pirsson, Henry S. Washington ------- 555 



Quartz in the Interior of Conglomerates, Etching of. M. L. Fuller - - 815 



Recent Publications 114,221,329,450,551,799,922 



Red Beds and Their Age, The Laramie Plains. Wilbur C. Knight - - 413 



Reid, Harry Fielding, The Variations of Glaciers ...... 313 



