58 i 



INDEX. 



CHEMISTRY-nMi/i/nietf. 



Hydrogen, nascent, reactions, Vour- 



nassos, 147. 

 Iron, oxide of, reduction by solid 

 carbon, Charpy and Bonnerot, 75. 

 Mesothorium, Marckwald, 230. 

 Mixtures, quantitative chemical 



analysis, 568. 

 Phosphorus pentoxide, action of 



water on, Balareff, 331. 

 Polonium, researches, Curie and 



Debierne, 453. 

 Radium, preparation of metallic, 



Ebler, 75. 

 Silver, estimation by electro-depo- 

 sition, Gooch and Feiser, 109. 

 Sodium paratungstate, use of, Gooch 



and Kuzirian, 497. 

 Sugar cane, determination of, 



Jolles, 567. 

 Sulphur dioxide, action upon am- 

 monia, 567. 

 Uranium minerals, radium contents 

 of, Marckwald and Russell, 566. 

 Chronometers, History of, Mascart, 



154. 

 Cincinnati Observatory, see OB- 

 SERVATORY. 

 Cirkel, F., Chrysotile -Asbestos, 575. 

 Colors of birds and insects, 568. 

 Cook, C. W., new occurrence of 



pearceite, 518. 

 Cook, O. F., coconut palm in Amer- 

 ica, 221. 

 Cooke, M. L., Academic and Indus- 

 trial Efficiency, 156. 

 Coronas and the fog layer, Barns, 



564. 

 Curtman, Qualitative Chemical Anal- 

 ysis, 332. 

 Cushing, H. P., lower Paleozoic 

 rocks of New York, 135. 



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

 erals, 341. 



Diffraction gratings, distribution of 

 energy, Trowbridge and Wood, 78. 



Duane, W., heat generated by radio- 

 active substances, 257. 



Eastman, C. R., new Elasmobranchs 



from Solenhofen, 399. 

 Eaton, G. F., osteology of Pterano- 



don, 148. 

 Electric cell, action of light on, Pela- 



bon, 76, 

 — Motors, Hobart, 78. 



Electricity, Congress of Applications 



of, 582. 

 — rays of positive, Thomson, 455. 

 Eliot, C, British Nudibranchiate 



Mollusca, 82. 



Feiser, J. P., estimation of silver by 

 electro-deposition, 109. 



Field Museum Natural History, 579. 



Florida geol. survey, 236. 



— production of phosphate rock in 

 1910, Sellards, 338. 



Foote, H. W., solid solution in min- 

 erals, 25. 



France, Mineralogy, Lacroix, 337. 



Frazer, P., Mineral Tables, 82. 



Gas thermometer, measurements 

 with, Day and Sosman, 341. 



Geography, Commercial, Robinson, 

 467. 



GEOLOGICAL REPORTS. 



Canada, 574. 



Florida, annual report, 236. 



Illinois, 335, 573. 



Indiana, 333. 



New Jersey, 152. 



New Zealand, 237, 573. 



North Carolina, 338. 



Ohio, 462. 



Tennessee, 334. 



United States, 31st annual report, 



234 ; publications, 235. 

 Vermont, 240. 



West Australia, 238, 239, 574. 

 West Virginia, 237, 334. 

 Geology, Elements, Blackwelder and 

 Barrows, 463. 



GEOLOGY. 



Badlands formation of South Da- 

 kota, O'Harra, 237. 



Baren Island and Spitzbergen geol- 

 ogy, Nathorst, 460. 



Camels of the Harrison beds, 

 Loomis, 65. 



Centrosaurus apertus, Lambe, 339. 



"Chazy" formation near Ottawa, 

 Raymond, 459. 



Dinosaur, new, from the Connecti- 

 cut Triassic, Talbot. 469. 



Dinosauria, armored, Wieland, 112. 



Elasmobranchs from Solenhofen, 

 new, Eastman, 399. 



Engelhardtia from the American 

 Eocene, Berry, 491. 



