526 



AUTHOR INDEX 



Speare, a. T. fRelation of fungi to in- 

 sects. 142. 



Stanton, Timothy W. *Fauna of Cannon- 

 ball marine member of Lance forma- 

 tion. 138. 



Steele, L. L. fHexabromide method for 

 linseed oil. 42. 



Steiger, George. Bementite and neoto- 

 cite from Western Washington; iden- 

 tity of bementite and caryopilite. 25. 



Sullivan, H. B. §Aerial photography, ap- 

 plication of, to mapping. 123. 



SwANN, W. F. G. Bearing of earth's size 

 upon changes in its magnetism. 275. 



SwiCK, Clarence H. *Modern methods 

 of measuring intensity of gravity. 374. 



Swingle, Walter J. fChinese botany and 

 botanists. 64. 



Taylor, C. S. fAmmonia, vapor pressure 

 of. 43. 



Taylor, W. P. *Ptarmigan, new from 

 Mt. Rainier. 495. 



Thom, W. Taylor, Jr. fStructure of Pop- 

 lar Dome in Montana. 420. 



Thompson, David G. fPleistocene lakes 

 along Mohave River, Cal. 423. 



TiDESTROM, IvAR. fFlora of Iberian pen- 

 insula. 243, 315. 



Thuras, a. L. Electrical conductivity 

 method of measiwing sea water salinity. 

 160. 



*Problems of physical oceanography. 



132. 



Todd, W. E. Clyde. *South American 



birds, new. 511. 

 TowNSEND, Charles H. *Expedition to 



tropical Pacific in charge of Alexander 



Agassiz. 62. 

 TuTTLE, J. B. fDetermination of rubber 



by combustion of the nitrosite. 40. 

 Tyndall, E. p. T. *Spectral transmission 



of the atmosphere. 210. 

 Van Duzee, M. C. *Dipterous genus, 



Dolichopus, in North America. 395. 

 Vaughan, T. Wayland. *Fauna of Can- 



nonball marine member of Lance for- 

 mation. 138. 



*Geology of northern West Indies. 



426. 



Veitch, F. p. tShoe soling material, in- 

 vestigation of. 40. 



ViNAL, .G. W. Oscillograph measurements 

 in battery circuit of automobiles. 51. 



Walters, F. M., Jr. *Wave length meas- 

 urements in arc spectra photographed 

 in yellow, red, and infra-red. 439. 



Walton, W. R. fBntomological drawings 

 and draughtsmen. 219. 



Waring, Gerald A. *Ground water in 

 Pahrump, Mesquite, and Ivanpah val- 

 leys, Nev. and Cal. 259. 



Washburn, F. M. fHexabromide method 

 for linseed oil. 42. 



Washington, Henry S. *Augite from 

 Vesuvius and Etna. 441. 



*Chemistry of earth's crust. 420, 



t422. 



Crucibles used in rock analysis. 9. 



fDeccan traps and other plateau 



basalts. 446. 



Granites of Washington, D. C. 459. 



*Italite, new leucite rock. 346. 



Obsidian from Copan and Chichen 



Itza. 481. 



*RhyoHtes of Lipari. 392. 



Waters, C. E. *Sulphur in petroleum oils. 

 261. 



Watson, Thomas L. Lazulite of Graves 

 Mt., Ga., and other occurrences in U. S. 

 386. 



Petrography of a lamprophyre dike 



cutting a pyrite body in Boyd Smith 

 mine, Va. 341. 



Wells, P. V. Bacteria, dilution method 

 of counting. 265. 



fBritish Association for the Ad- 

 vancement of Science, 1920 meeting. 

 166. 



Wells, R. C. tSalines and saline lakes, 



utilization of some. 446. 



Water of Borax Lake. 477. 



Wells, W. F. Bacteria, dilution method 



of counting. 265. 



WennER, F. fElectrical resistance of the 

 human body. 286. 



Wentworth, C. K. fSedimentary rocks, 

 sizing scale for constituents of. 426. 



West, C. J. fLipoids, chemistry of the 

 unsaturated. 41. 



Westgate, L. G. *Iron ore near Stanford, 

 Mont. 393. 



