INDKX. 



511 



CHEMISTRY— cont, 



Germanium in zinc materials, Bu- 

 chanan, 430. 

 Hydrofluoric and fluosilieic acids, 



Dinwiddie, 421. 

 Hydrogen, ionization, Dempster, 



76. 

 Iodine, action of light upon, Bor- 



dier, 496. 

 Lithium, separation from potas- 

 sium, etc., Palkin, 496. 

 Metals, common, qualitative separa- 

 tion, Clarens, 364. 

 — solution in ferric salts, Van 



Name and Hill, 301. 

 Nitrogen, modification, Strutt, 368. 

 Silicon, thermo-chemistry, Mixter, 



125. 

 Sulphur, sulphide, estimation, Dru- 



shel aud Elston, 155. 

 Tellurium, arsenic, etc., detection 

 and separation, Browning, et al., 

 106. 

 Thorium, separation from iron, 



Thornton, 151. 

 Tin, arsenic and antimony, separa- 

 tion, Welch and Weber, 74. 

 Vanadic acid, estimation, Edgar, 



365. 

 Vanadium, separation of, Turner, 

 109 

 Cleland, H. F., Geology, 282. 

 Climatic fluctuations, pleionian cy- 

 cle of. Arctowski, 27. 

 Coal and Coal Industry, 503. 

 Coast Survey, United States, centen- 

 nial celebration, 505. 

 Cockerell, T. D. A., insects in Bur- 

 mese amber, 135. 

 Colloidal Solutions, Burton, 79. 

 Color Vision, theory, Houstoun. 433. 

 Continental fracturing, Oceanica, 



Schuchert, 91. 

 Crew, H., Physics, 50. 

 Crystal optics, use of graduated 



sphere, Warren, 493. 

 — zones, plotting, Blake, 486. 



Dale, T. N., Algonkian Cambrian 



boundary iu Vermont. 120. 

 Dall, W. H., Bivalve Mollusks of the 



west coast of America, 439. 

 Darton, N. H., geology of Luna 



County, New Mexico, 82. 

 Dinwiddie, J. G., hydrofluoric and 



fluosilieic acids, 421 ; fluorine in 



soluble fluorides, 464. 

 Drushel, W. A., sulphide sulphur, 



155 

 Duff, A. W., Physics, 437. 



Earth, Origin. Chainberlin, 167, 371. 



Earthquake Investigation Commit- 

 tee, Japanese, 84. 



Eaton, G. F., Osteological Material 

 from Machu Picchu, 86, 281. 



Education Board, General, report, 

 89. 



— Public, in Maryland, 88. 

 Electricity, Pidduck, 79. 



— Emission from Hot Bodies, Rich- 

 ardson, 369. 



Elston, C. M., sulphide sulphur, 



155. 

 Emerald deposits of Muzo, Colombia, 



Pogue, 85. 

 Emerson, B. K., Mineralogical 



notes, 233. 

 Emery, W. B., igneous geology of 



Carrizo Mountain. Arizona, 349. 



Florida, discovery of fossil human 



remains, Sellards, 1. 

 Florissant beds, Coleopterafrom, 81. 

 Ford, W. E., hydrozincite, 59; mar- 



garosanite. 159; new mineral names, 



504. 

 Fringes, interference, rotation, 



Barus, 63. 



Gaskell, W. H., Involuntary Nerv- 

 ous System, 87. 



Geodes of the Keokuk beds, Van 

 Tuyl, 34. 



GEOLOGICAL REPORTS. 



Canada, 84. 

 Illinois. 503. 

 United States, 440. 

 Virginia, 82. 

 West Virginia. 503. 

 Wisconsin, 83. 

 Geology, Cleland, 282. 



GEOLOGY. 



Albertella fauna, Burling, 469. 

 Algonkian Cambrian boundary in 



Vermont, Dale, 120. 

 Amphibia, Coal Measures of North 



America, Moodie, 502. 

 Berea formation of Ohio, etc., Ver- 



wiebe, 43. 

 Brachiopoda, Permian, of Armenia, 



Stoyanow, 439. 

 Cambrian geology, Walcott, 439. 

 — and Pre-Cambrian formations 



Montana, Walcott, 372. 



