INDEX TO VOLUME XVIII 785 



PAGE 



Omori, F. Report of the^ Observation of Pulsatory Oscillations in 



Japan (ist paper). Review by W. H. H. . . 198 



Ontario, Eighteenth Annual Report of the Bureau of Mines. Review 



by E. R. L. . . 570 



Ontario, Report on a Portion of the Algoma and Thunder Bay Districts. 

 By W. J. Wilson, and on the Region Lying North of Lake Superior 

 between the Pic and Nipigon Rivers. By W. H. Collins. Review 

 byE.R. L. 572 



Orthoses et des microclines, Sur un caractere chimique differentiel des. 



By Ph. Barbier. Review by F. C. Calkins .... 476 



Osborn, Henry Fairfield. Correlation of the Cenozoic through Its 



Mammalian Life ......... 201 



Oscillations in Japan, Report of the Observation of Pulsatory. By F. 



Omori. Review by W. H. H. . . 198 



Pardee, J. T. The Glacial Lake Missoula 376 



Parsons, A. L. Ein neues Sklerometer. Review by W. T. Schd,ller . 579 



Parsons, Charles Lathrop, and Alfred J. Moses. Elements of Miner- 

 alogy, Crystallography, and Blowpipe Analysis from a Practical 

 Standpoint. Review by W. H. E. . .199 



Peculiar Cleavage Structure Resembling Stretched Pebbles, near EUi- 



jay, Georgia, On a. By W. C. Phalen . . -554 



Pegmatites of Maine, Origin of the. By Edson S. Bastin . . 297 



Penhallow, D. P. Report on Tertiary Plants of British Columbia. 



Review by E. R. L. . 677 



Pennsylvania, Report of Topographic and Geologic Survey Commission 



of. Review by E. R. L. . . 200 



Penrose, R. A. F., Jr. The Nitrate Deposits of Chile . . . i 



Permian Reptiles: Rhachitomous Vertebrae, New. By S. W. Willis- 

 ton 585 



Petrographical Microscope, Some Simple Improvements for a. By 



Albert Johannsen. Review by Albert D. Brokaw . . . 479 



Petrographic Microscope, A New. By Fred Eugene Wright. Review 



by Albert Johannsen ........ 483 



Petrological Abstracts and Reviews . . . . . 476, 573 



Phalen, W. C. On a Peculiar Cleavage Structure Resembhng Stretched 



Pebbles, near EUijay, Georgia . . . . . .554 



Physiography of the Bishop Conglomerate, Southwestern Wyoming, 



The. By John Lyon Rich 601 



Pikrite des sachsischen Vogtlandes, Die. By Alfred Uhlemann. Re- 

 view by Albert Johannsen . . . .581 



Pittman, E. F. Epitome of the Geology of New South Wales. Review 



by R. T. C 566 



Platecarpus, A Mounted Skeleton of. By S. W. WiUiston . . 537 



