622 



INDEX 



Umpleby, J. B. *Geology and ore 

 deposits of the Mackay region, 

 Idaho. 514. 



Vaughan, T. W. fSignificance of 

 reef coral fauna at Carrizo Creek, 

 Imperial County, California. 83, 

 194. 



Vinal, G. W. *Some electrical prop- 

 erties of silver sulphide. 584. 



Walcott, C. D. *Fauna of the Mount 

 Whyte formation. 565. 



Walker, T. L. The crystal form of 

 spencerite. 456. 



Weibel, Ernest. *A study of elec- 

 tromagnet moving coil galvanom- 

 eters for use in alternating cur- 

 rent measurements. 36. 



Wells, P. V. fA standard of tur- 

 bidity. 473. 



Wells, R. C. fEvapo ration of water 



at depth by natural gases. 309. 

 Tungstenite, a new mineral. 596. 



Wenner, F. fThe experimental basis 

 for Ohm's law. 21. 



Wetmore, Alexander. fNote on hi- 

 bernation of the mud-turtle. 315. 



*The birds of Culebra Island, 



Porto Rico. 588. 



Wheeler, W. C. *The inorganic con- 

 stituents of marine invertebrates. 

 562. 



Wherry, E. T. *American occur- 

 rence of miloschite. 393. 



Clay derived from volcanic dust in 



the Pierre in South Dakota. 576. 



*Glauberite crystal cavities in the 



Triassic rocks of eastern Pennsyl- 

 vania. 268. 



theological areas about Wash- 

 ington. 435. 



Halloysite from Colorado. 178. 



Leverrierite from Colorado. 208. 



Neodymium as the cause of the 



red-violet color in certain min- 

 erals. 143. 



*Notes on alunite, psilomelanite, 



and titanite. 267.* 



"("Occurrence of calcite in silicified 



wood. 433. 



The indices of refraction of ana- 

 lyzed rhodochrosite and siderite. 

 365. 



The nomenclature and classifica- 

 tion of the native element min- 

 erals. 447. 



*Two new fossil plants from the 



Triassic of Pennsylvania. 393. 



White, David. fDiscussion of gravity 

 anomalies from the stratigraphic 

 standpoint. 312. 



fDr. C. A. Davis, an appreciation. 



115. 



White, W. P. fSpecific heats at high 

 temperatures. 21. 



Wig, R. J. *Durability of stucco and 

 plaster construction. 16. 



Wilhelm, R. M. *The freezing point 

 of mercury. 13. 



Williamson, E. D. fThe effect of 

 elastic strain on the equilibrium 

 temperature of a solid and its 

 liquid. 79. 



Wilson, E. B. Note on multiple 

 algebra: The reduction of real 

 dyadics and the classification of 

 real homogeneous strains. 173. 



Winchester, D. E. fOil shale in the 

 United States. 432. 



*The lignite field of northwestern 



South Dakota. 36. 



*Oil shale in northwestern Colo- 

 rado and adjacent areas. 265. 



Woolsey, L. H. *The Bull Moun- 

 tain coal field, Musselshell and 

 Yellowstone counties, Montana. 

 602. 



Wooton, E. O. "("Relation of plant 

 succession to forestry and grazing. 

 200. 



Wright, F. E. fThe application of 

 polarized light to the study of 

 opaque substances. 473. 



The thermodynamic reversibility 



of the equilibrium relations be- 

 tween a strained solid and its 

 liquid. 405. 



Wright, Sewell. The average cor- 

 relation within subgroups of a 

 population. 532. 



