15] 



VOLUMES XXI-XXX. 



451 



Cyanide Processes, Wilson, 26, 



5/6. 

 Cycads, historic, Wieland, 25, 93; 



Mesozoic, 21, 175; structure of, 



Worsdell, 25, 358. 



D 



Dadourian, H. M., radio-activity 

 of thorium, 21, 427; atmos- 

 pheric radio-activity, 25, 335. 



Dahlgren, W., Animal Histology, 



27, 97- 



Dahomey, Mission Scientifique, 

 Hubert, 26, 515. 



Dale, T. N., Cambrian conglomer- 

 ate of Ripton, Vermont, 30, 267. 



Dall, W. H., Pliocene climatic 

 conditions at Nome, Alaska, 23, 



457. 



Daly, R. A., abyssal igneous injec- 

 tion and mountain building, 22, 

 195; limeless ocean of Pre- 

 Cambrian time, 23, 93, 393; 

 mechanics of igneous intrusion, 

 26, 17; Pleistocene glaciation 

 and the coral reef problem, 30, 

 297. 



Dana, E. S., Second Appendix to 

 the System of Mineralogy, 28, 

 196. 



Darwin celebration at Cambridge, 

 25, 460. 



— and Modern Science, Seward, 



28. SOS- 

 Davis, B. M., Botany, 23, 155. 

 Davis, W. A., Allen's Commercial 



Organic Analyses, 29, 263. 



Davis, W. M., Physical Geog- 

 raphy, 26, S9I. 



Davison, J. M., analysis of Esta- 

 cado meteorite, 22, 59. 



Day, A. L., lime-silica series of 

 minerals, formation, 22, 265; 

 new measurements with gas 

 thermometer, 26, 40S; nitrogen 

 thermometer from zinc to palla- 

 dium, 29, 93. 



Declination instrument, new. Hut- 

 chins, 28, 260. 



DeLury, J. S., cobaltite in north- 

 ern Ontario. 21, 27s. 



Deming, C. D., preparation of 

 formamide, 24, 173. 



Derby, O. A., Brazil geol. survey. 

 23, 308; manganese deposits of 

 Brazil. 25, 213. 



Dew-ponds, Martin, 24, 509. 



Diamond pipes in South Africa, 

 Harger, 21, 471. 



— from Arkansas, 24, 275; from 

 Southwest Africa, 27, 489. 



Diatomaceous dust on ice floes, 

 Kindle, 28, 175. 



Dielectrics, anomalies of, Schwei- 

 dler, 25, 147. 



Dike, P. H., observations in at- 

 mospheric electricity, 27, 197. 



Diller, J. S., Mesozoic of south- 

 western Oregon, 23, 401; geol- 

 ogy of Taylorsville region, 

 Calif., 27, 412. 



Dinosaurs, distribution. Lull, 29, 

 i; musculature of. Lull, 25, 387. 

 See GEOLOGY. 



Diopside, relation to calcium 

 and magnesium metasilicates, 

 Wright and Larsen, 27, i. 



Discharge, see Electric. 



Doelter, C, Petrogenesis, 21, 472. 



Dominica, Avifauna of, A. H. 

 Verrill, 21, 337; Hercules bee- 

 tles, A. H. Verrill, 21, 305; 24, 

 30S- 



Doppler, effect in canal streams, 

 Stark, 23, 63; in positive rays in 

 hydrogen, Royds, 29, 81; Stras- 

 ser, 29, 551. 



Dresser, J. A., metamorphic rocks 

 of St. Francis Valley, Quebec, 

 21, 67; rare rock type from 

 Canada, 28, 71. 



Drew, G. A., Invertebrate Zool- 

 ogy. 24, 382. 



Drude, Optics, 23, 146. 



Drushel, W. A., separation of 

 magnesium, 23, 293; volumetric 

 estimation of lanthanum, 24, 

 197: potassium as the cobalti- 

 nitrite. 24, 433; estimation of 

 potassium, 26, 329, S55; esters 

 of halogen substituted acids, 30, 

 72. 



Duane W., emission of electricity 

 from radium, 26, i ; range of 

 a-rays, 26, 465. 



Duff, A. W., Physics, 27, 8s; 28, 

 SS6; Physical Measurements, 

 27, 488. 



Duggar, B. M., Fungous Diseases 



of Plants, 30, 92. 

 I Duncan, D., Life of Herbert Spen- 

 cer, 27. 09. 



Duncan, W. S., Evolution of Mat- 

 ter, 23,471. 



Duralumin, a new alloy, 30, 349. 



