POPULAR POTTSNTLLE 233 



Page 

 Popular Science Monthly, Conference papers oj' the First Aiumal Meet; 



ing of tbe Paleontological Society ])nl)lislie(l in the 23, 87 



Port Nelson limestones 30, 367 



— Kowan, Lake Erie, Interglacial beds in Canada first located at 21,435 



Portage stratigraphy in western New York ; G. 11. Chadwick 30, 157 



Porto Kico, Fossil mammals from 38, 209 . 



— — , Geologic history of 37, 83 



— • — , Geological reconnaissance of 36, 113, 156 



, Recent changes of level in 39, 138 



Position of the New England npland in the White Monntains; Arniin K. 



Lobeck 37, 108 



PosNJAK, EuGEN, and Merwin, n. E. ; Definition and determination of 



the mineral hydroxides of iron 37, 61 



PosT-CiiAZY age, Pamelia, Lowville, and Black rivers, Canada. ])ai'ts of 



one group of 34, 111 



— Cretaceous floras 35, 334 



unconformity. New Mexico and Colorado 33, 612 



Postglacial age of lower Little Missouri Valley, Evidence of 37, 302 



— deformation of the Ontario region 35, 65 



Post-Glacial earth movements from the Lake region to the Saint Law- 

 rence ^'alley, Extended determination of ; J. W. Spencer 34, 74, 



217-227, 714 



— erosion and oxidation ; George Frederick Wright 33, 47, 277-296, 733 



, New York State 34, 160 



— literature. Bibliography of 39, 229 



— marine submergence of Long Island ; PI. L. Fairchild 38, 142, 279 



— time, A method of measuring 38, 138 



— uplift of northeastern America ; II. L. Fairchild 39, 70, 187 



southern New England ; 11. L. Fairchild 30, 597 



the New England coastal region ; H. L. Fairchild 30, 89 



— waters in Hudsou-Champlain Valley 30, 90 



Post- Lacustrine deformation 37, 668 



Post-Ordovician deformation in the Saint Lawrence Valley, New York ; 



G. H. Chadwick 36, 115, 287-294 



Post-Tertiary history of the lakes of Asia Minor and Syria ; Ellsworth 



Huntington 31, 20, 755 



PosTMA, G. E. ; Trachytic perlite from Lone Hill, near San Jose, Cali- 

 fornia 34, 94 



Potash slates 30, 112 



Pot-hole action, Natural bridges formed by 31, 321 



Potomac group. Age of the 36, 336 



— invertebrate fauna 36, 345 



PoTONiE, H., cited on origin of oil 38, 729 



"Potsdam" and "calciferous" formations no more recognized 36, 288 



Pottsville- Allegheny boundary in the interior province (Illinois and 



.Missouri coal fields) ; David White 34, 75, 716 



Pottsville formation of Maryland 30, 571 



— in Ohio unconformity compared with Berea 26, 213 



