15] 



VOLUMES XXXI— XL. 





Darwin's theor ral reel's. 



J34; 40, 223. 



Davis. H. N.. Physics, 36. 566. 

 Davis, J. VV M meteorites ^i Bren- 



ham, Kansas. 39. 609. 

 Davis. W. M., Dana's confirma- 

 tion of Darwin's theory of coral 

 134; Beschrei- 

 bung der Landformen, 35, 551; 

 Vlemorial study of coral 

 reefs. 40. 

 Davison. C. Earthquakes, 34, 400. 

 Day, A. L., molting points of min- 

 1 : nitrogen ther- 

 mor lie, with boiling- 



point oi sulphur. 33, 517; de- 

 termination oi mineral and rock 

 densities at high temperatures. 

 1 ; volcanic activity and 

 water. 37, 35 

 Dean. E. W., hydrolysis of esters 

 of aliphatic acids. 34, 293; 35, 



Delta ray-, velocities, Bumstead, 



36, Qi. 

 Dendy, A., Evolutionary Biology, 



34. 49L 



Dennis, L. M., Gas Analysis. 36, 

 74- 



Density of minerals, determina- 

 tion. Merwin. 32, 425. 



at high temperatures. Day. 



-man and Hostetter. 37, 1. 



Standards of. Merwin. 32, 



Deperet, C. Oligocene of the 

 Roanne Basin, 35, 350. 



Deposits, criteria of continental, 

 Kindle. 32, 225. 



Derby. O. A., gold-bearing lode 

 i'assagem. Brazil. 32, 185; 

 notable Brazilian diamond. 32, 

 tot: -tern structure of P-aro- 

 nius -i-. 36, 4*0: crown 



structure of P^aroniu- brasili- 

 en<;is. 38, T46: stem structure of 

 ea singularis. 39, 25T. 



Detroit Observatory, ?< 



Devonian Helta. <=ee Appalachian. 



— See GEOLOGY. 

 Dew-Ponds, Martin. 39, 6* 

 Diamond, Brazil. Derby. 31, 480; 



32, TOT. 



— and graphite, heat of combus- 



ts. 638. 

 Diatomaceae. cleaning. Darling. 



38. 282; Blake, cleaning. 35, 19; 



mountine. 37, 53". 

 Dicotyls, origin, Wieland. 38, 451. 



Dielectric Phenomena with high 

 Voltages, Peek. 40, 82. 



Diffraction gratings, distribution 

 of energy. Trowbridge and 

 Wood, 31. 78. 



Diffusion theory discussed. Van 

 Name and Bosworth, 32, 207. 



Dinosaurs, see GEOLOGY. 



Dinwiddie, J. G., separation of 

 magnesium. 39, 662. 



Direct ami Alternating Current 

 Manual. Bedell and Pierce, 32, 

 395. 



Disks, metallic, repulsion of, 

 Barus, 39, 93- 



Dispersion experiment, Thomp- 

 son. 39, 218. 



— ■ of metals, Wheeler. 35, 491. 



Dixon, H. H., Transpiration and 

 the Ascent of Sap in Plants, 40, 

 91. 



Dolphin, fossil. Cal., Lull, 37, 209. 



Drew, G. A., Zoology, 37, 123. 



Drude, P., Optics, 35, 193. 



Drushel, W. A., hydrolysis of me- 

 tallic acid sulphates, 32, 51; of 

 esters in fatty acids. 33, 27; 34, 

 . 6o, 293; 35, 4S6; 37, 514. 



— hydrochloric acid in estima- 

 tion of organic nitrogen. 39, 

 398; hydrolysis of ethyl hydra- 

 crylate, 39, 113; preparation of 

 glycocoll and diethyl carbon- 

 ate. 40, 500; hydracrylic esters, 

 40, 511; simple and mixed alky! 

 phosphates, 40, 643. 



Duane, W., heat generated by 

 radio-active substances. 31, 257; 

 effect of magnetic field on ioni- 

 zation currents. 35, 12T; elec- 

 tric charges of a- and |S-rays, 



35, 295. 



Duckworth, W. L. H., Prehistoric 



Man. 35, no. 

 Duff, A. W., Physics. 34, 483. 

 Duggar, B. M., Fungous Dis 



lants, 33. T64. 

 Dunbar, C. O., nodules with 



fishes, Kansas Coal Measures, 



38, 157. 

 Duncan, J., Mechanics and Heat, 



36, :^~- 



Eakle. A. S., wilkeite and okenite, 



California, 37. 262. 

 Ealand, C. A., Insects and Man, 



40, 22 T. 



