700 



INDEX 



Voegtlin, Carl. Importance of vi- 

 tamines in relation to nutrition in 

 health and disease. f298, 575. 



Wainright, Richard. fCivil War 

 record of the TJ. S. Coast and Geo- 

 detic Survey and what the Sur- 

 vey is doing towards prepared- 

 ness. 264. 



Walcott, C. D. *Cambrian trilo- 

 bites. 501. 



Walker, T. L. Hopeite from the H. 

 B. mine, Salmo, B. C. 685. 



Waltenberg, R. G. Further experi- 

 ments on the volatilization of 

 platinum. 365. 



Washington, H. S. fThe persistence 

 of the volcanic vents at Strom- 

 boli. 517. 



Waters, C. E. *Further data on the 

 oxidation of automobile cylinder 

 oils. 507. 



*Some qualitative tests for gum 



arabic and its quantitative deter- 

 mination. 91. 



Weaver, E. R. *Colorimetric deter- 

 mination of acetylene and its 

 application to the determination 

 of water. 185. 



Weaver, F. C. *A variable self and 

 mutual inductor. 614. 



Wegemann, C. H. fDiscovery of 

 Wasatch fossils in so-called Fort 

 Union beds of Powder River basin, 

 Wyoming, and its bearing on the 

 stratigraphy of the region. 254. 



Wells, P. V. fStudy of fog at sea. 

 151. 



Wells, R. C. *Experiments on the 

 extraction of potash from wyo- 

 mingite. 504. 



Wells, R. S. Lorettoite, a new min- 

 eral. 669. 



Wetmore, Alex. fNotes on the hab- 

 its of the duck hawk. 78. 



Wherry, E. T. *Chemical composi- 

 tion of bornite. 149. 



A chemical study of the habitat 



of the walking fern, Camplosorus 

 rhizophyllus (L.) Link. 672. 



Lozenge-shaped cavities in the 



First Watchung Mountain zeolite 

 deposits. 181, f309. 



*Notes on allophanite, fuchsite, 



and triphylite. 149. 



fNotes on the geology near Read- 

 ing, Pennsylvania. 23. 



A peculiar intergrowth of phos- 

 phate and silicate minerals. 105. 



*Peculiar oolite from Bethlehem, 



Pennsylvania. 71. 



White, David. Contributions to 

 economic geology, 1913. Part 11. 

 Mineral fuels. 20. 



Williams, H. S. *Fauna of the Chap- 

 man sandstone of Maine, including 

 descriptions of some related spe- 

 cies from the Moose River sand- 

 stone. 564. 



Williams, R. R. fChemical nature of 

 vitamines. 308. 



Williams, T. A. fOrigin of super- 

 stitions. 312. 



Wilson, E. B. Note on relativity: 

 The geometric potential. 665. 



Wilson, Woodrow. fScientific spirit 

 of the U. S. Coast and Geodetic 

 Survey. 267. 



Woodward, R. S. fExtraction of 

 square roots of numbers. 299. 



Woodward, R. W. *The failure of 

 brass. — 1. Microstructure and ini- 

 tial stress in wrought brasses of 

 the type 60 per cent copper and 

 40 per cent zinc. 680. 



Wright, F. E. fAnalysis of crystal 

 structure by X-rays. 361. 



Crystals and crystal forces. 326. 



A geological protractor. 5. 



Note on the lithophysae in a speci- 

 men of obsidian from California. 

 367. 



A precision projection plot. 521. 



Recent improvements in the pet- 



rographic microscope. 465. 



Simple device for the graphical 



solution of the equation A = B.C. 

 1. 



Young, R. A. fBotanical and eco- 

 nomic notes on the dasheen. 158. 



