Index. 



±S5 



cury, McCay and Anderson, 

 216. 

 Fluorine, determination, Travers, 



0)2. 



Gasoline, synthetic, 216. 

 Germanium, separation from 



arsenic, Muller, 301. 

 Gold in complex chlorides, Wells, 



257, 315, 414- 

 Hydrogen, persulphides, \\ alton 



and Parsons, 301. 

 Mercury, isotopes, Bronsted and 



von Hevesy, 300. 

 Oxalic acid, hydrated, Hill and 



Smith, 3/8. 

 Potassium, sodium, etc., heats of 

 neutralization, Richards and 

 Rowe. 474- 

 Silver oxide, crystal structure, 

 Wyckoff, 184. 

 Children, Mentally Deficient, Shut- 



tleworth and Potts, 312. 

 Chironomides of Belgium, Goet- 



ghebuer, 392. 

 Churchward, A., Origin of the Hu- 

 man Race, 383. 

 Clark, A. H., Existing Crinoids, 226. 

 Clark, T. H., Taconic Revolution, 



151. 

 Clarke, J. M., James Hall, 181 1- 



1898, 220. 

 Climates, Evolution, Manson, 391. 

 Clokey, I. W., Carex notes, 88. 

 Cocciniglie Italiane, Leonardi, 388. 

 Colby, C. C, Economic Geography 



of No. America, 227. 

 Colors of substances, theory for 



the cause. Wells, 414. 

 Comstock lode. Nevada, 385. 

 Crinoids, Existing, Clark, 226. 

 Crystal structure. See Wyckoff. 

 Cyperaceae, studies in, Holm, 

 XXXIII, 138; XXXIV, 260. 



Dake, C. L., problem of St. Peter 

 Sandstone, 221. 



D'Alembert, J., Traite de Dyna- 

 mique, 95. 



Dana, E. S., Text book of Miner- 

 alogy, revised, 155. 224. 



Dannemann, F., Die Naturwissen- 

 schaften. 149. 



David, T. W. E., "varve shales" of 

 Australia, 115. 



Davison, C, Seismology. 222. 



Dercum, F. X., Physiology of the 

 Mind, 391. 



Distillation Principles, Young, 379. 



Ditmars, R. L., Reptiles of the 



World, 387. 

 Diwald, K., Morphogenese der 



Oetscherlandschaft, 153. 

 Dominican Republic, Geology. 221. 

 Dustfall, 1920, Winchell and Miller, 



349- 



E 



Earth Evolution, Hobbs, 223. 

 Eikenberry, W. L., Teaching of 



General Science, 478. 

 Eisenhiittenkunde, Osann, 146. 

 Electrician, Jubilee number, 99. 

 Engineers' Tables, Ferris, 312. 



Ferris, C. E., Engineers' Tables, 



312. 

 Fluid resistance, Wieselsberger, 



217. 

 Foerste, A. F., Arctic Cephalopods, 



304. 

 Ford, W. E., Dana's Text Book of 



Mineralogy, 155, 224. 

 Fossilium Catalogus, I., Lambrecht, 



etc., 151. 



G 

 Gas, adsorption by charcoal and 



silica, 147, 

 Gastropod trails in sandstones, 



Powers, 101; Raymond, 108. 

 Geography, Economic, of No. 



America, Source Book, Colby, 



227. 



GEOLOGICAL REPORTS. 



Canada, 150. 

 Illinois, 480. 

 Penns}dvania, 305, 384. 

 South Australia, 384. 

 United States, 97. 

 Vermont, 151. 

 West. Australia, 481. 

 West Virginia, 223. 

 Geology, Commercial, Atlas, 389. 



GEOLOGY. 



Araeocyon, Thorpe, 97, 371. 



Archaeopteryx of British Mu- 

 seum. 382. 



Blastomeryx marshi, Lull, I59-. 



Cambrian, in European Arctic, 

 Holtedahl. 343. 



C a n i d x, Oregon Tertiary, 

 Thorpe, 162. 



Calatoloides, Texas, 252. 



Cephalopods, Arctic, Foerste. 

 304. 



