622 



INDEX 



*Cambrian Geology and Paleon- 

 tology, III, No. 1. The Cambrian 

 faunas of Eastern Asia. 423. 



Walker, P. H. Note on a new ex- 

 traction apparatus. 168. 



Waltenberg, R. G. The emissivity 

 of metals and oxides, II: Measure- 

 ments with the micropyrometer. 

 566. 



Observations on finishing tempera- 

 ture and properties of rails. 353. 



Ward, L. Keith. Review of papers. 

 170. 



Waring, Gerald A. *Geology and 

 water resources of a portion of 

 south-central Washington. 226. 



Washburne, C. W. Evidence of the 

 inorganic origin of petroleum. 10. 



Washington, Henry S. *Some lavas 

 of Monte Arci, Sardinia. 5. 



The distribution of the chemical 



elements in the earth's crust. 263. 



Weibel, Ernest. The testing of poten- 

 tiometers. 469. 



Wells, R. C. The electromotive be- 

 havior of soluble sulfides. 332. 



Wenner, Frank. Adjustments of the 

 Thomson bridge in the measure- 

 ment of very low resistances. 471. 



The testing of potentiometers. 469. 



Wheeler, W. C. *The composition 

 of crinoid skeletons. 419. 



Wherry, Edgar T. The occurrence 

 of carnotite in eastern Pennsyl- 

 vania. 296. 



Variations in the compositions of 



minerals. 111. 



White, David. Resins in Paleozoic 

 coals. 10. 



*Resins in Paleozoic plants and in 



coals of high rank. 225. 



White, W. P. Calorimeter jacket de- 

 sign. 334. 



Thermostats of relatively high pre- 

 cision. 205. 



Wight, W. F. Andean origin of the 

 cultivated potato. 589. 



Williams, Henry S. *Recurrent Tro- 

 pidoleptus zones of the Upper De- 

 vonian in New York. 199. 



Willis, Bailey. Physiography of the 

 Southern Andes. 8. 



Wilson, Charles Branch. *Crusta- 

 cean parasites of West Indian fishes 

 and land crabs, with descriptions 

 of new genera and species. 231. 



Winchester, D. E. The upper Cre- 

 taceous formations of western New 

 Mexico and their relations to the 

 underlying rocks. 300. 



Woodruff, E. G. Bituminous shale 

 in northwestern Colorado and 

 northeastern Utah. 170. 



Well at Dubuque, Colorado. 169. 



Wooton, E. O. *Descriptions of new 

 plants, preliminary to a report 

 upon the flora of New Mexico. 

 64. 



Wright, Fred Eugene. The calcula- 

 tion and comparison of mineral 

 analyses. 514. 



The change of optical and crystal- 



lographic properties of quartz with 

 temperature. 9. 



Color photography. 333. 



The determination of the relative 



refringence of mineral grains under 

 the petrographic microscope. 389. 



The measurement of crystallo- 



graphic and optical properties at 

 high temperatures. 205. 



The measurement of the refractive 



index of a drop of liquid. 269. 



Measurements of refractive indices 



on the principal optical sections of 

 bi-refracting minerals in conver- 

 gent polarized light. 534. 



A new dip chart. 440. 



A new half shade apparatus with 



variable sensibility. 309. 



The optical character of the faint 



interference figure observed in high 

 power objectives between crossed 

 nicols. 301. 



* Abstracts. 



