INDEX 



557 



*Crystallography of natramblygonite. 



W. T. SCHALLER. 152. 



Hodgkinsonite. C. Palache and W. 



T. ScHALLER. 474. 

 Immense bloedite crystals. W. T. 



ScHALLER. 75. 

 Mineral analyses. F. E. Wright and 



C. E. Van Orstrand. 223. 

 Mineral separations. W. F. Hille- 



brand. 137. 

 Refractive indices of strengite. W. 

 T, ScHALLER. 249. 

 *Tourmaline group. W. T. Schaller. 



151. 

 Triplite from eastern Nevada. F. L. 

 Hess and W. F. Hunt. 286. 

 Oceanograpluj. Ocean temperatures. 

 C. W. Waidner, H. C. Dickinson 

 and J. J. Crowe. 405. 

 *Sea water temperatures in the vi- 

 cinity of icebergs. C. W. Waid- 

 ner. 426. 

 *Salinity of surface water. A. H. 

 Clark. 165. 

 Organic chemistry. *Caffein in tea and 



coffee. H. C. Fuller. 342. 

 Paleontology. . *Cambrian Brachio- 

 poda. C. D. Walcott. 336. 

 *Cambrian Holothurians. A. H. 



Clark. 530. 

 *Extinct fauna of southern California. 



C. H. Merriam. 428. 

 *Habitat of the Cambrian brachiopoda. 



L. D. Burling. 199. 

 *Paleobotanical study of the coal- 

 bearing rocks of the Raton Mesa 

 region of Colorado and New Mexi- 

 co. F. H. Knowlton. 173. 

 *Recent discovery of dinosaurs in the 



Tertiary. W. T. Lee. 173. 

 *Restoration of the genus Eldonia. 



A. H. Clark. 167. 

 The systematic position of the crinoid 

 family Plicatocrinidae. Austin H. 

 Clark. 494. 



Petrography. *Microscopical petrog- 

 raphy from the quantitative view- 

 point. F. E. Wright. 115. 



*Study of specimens of loess, tierra 

 cocida, and scoria. F. E. Wright 

 and C. N. Fenner. 115. 

 Petrology. *A graphical plot for use 

 in the microscopical determination 

 of the plagioclase feldspar. F. E. 

 Wright. 525. 



*Graphical methods in microscopical 

 petrograph}^ F. E. Wright. 524. 



— Magnetite basalt. H. S. Washing- 

 ton and E. S. Larsen. 449. 



*The index ellipsoid (optical indica- 

 trix) in petrographic microscope 

 work. Fred E. Wright. 503. 



*Oblique illumination in petrographic 

 microscope work. F. E. Wright. 

 525. 



*Study of a contact metamorphic ore- 

 deposit. J. E. Spurr, G. H. Gar- 

 ret, and C. N. Fenner. 116. 

 Physical chemistry. *The Binary sys- 

 tem. N. L. BowEN. 380. 



*Effect of high pressures on behavior 

 of solid substances. J. Johnston 

 and L. H. Adams. 165. 



*The phenomena of equilibrium be- 

 tween silica and the alkali carbon- 

 ates. P. NiGGLi. 522. 



*The physical chemistry of Seger 

 cones. R. B. Sosman. 501. 

 Physics. Absorption of light. P. G. 

 Nutting. 322. 



*Application of the microscope to 

 physical problems. Wright, 

 Briggs, etc. 48. 

 Bismuth thermopiles. W. W. Cob- 

 LENTZ. 357. 



*Calibration of optical pyrometers. P. 



D. Foote. 151. 

 Constants of spectral radiation. W. 

 W. COBLENTZ. 10, 177. 



*Control of temperatures in an elec- 

 tric furnace. A. W. Gray. 536. 



* Abstracts. 



