54:8 



INDEX. 



Chemistry — 



Iron carbonyl, Mondand Liinger, 151 : 

 in water gas, Roscoe and Scudder. 

 152. 

 Isomorphism, Retgers, 68. 

 Molybdenum and tungsten, new oxy- 

 gen compounds, Pechard, 70. 

 Nitrogen peroxide, dissociation, Ost- 



wald, 430. 

 Ozone, production, Frolich, 150. 

 Per sulphates, crystallized, Marshall, 



69. 

 Phosphoric acid, basicity. Berthelot, 



532. 

 Platinum, polarization by oxygen and 



hydrogen, Markofsky, 531. 

 Rubidium and potassium trihalides, 



"Wells and Wheeler, 47 5. 

 Silver haloid molecule, disruption of, 



Lea, 527. 

 Sodium, preservation, Rosenfield, 70. 

 Strontium, separation from calcium. 



Browning, 50, 386. 

 Sulphide solutions, physical constitu- 

 tions. Picton, 332. 

 Clarke, F. W., Tschermak's theory of 

 the chlorite group, 190; constitution 

 of certain micas and chlorites, 378. 

 Clarke, J. M., Clymenia of western New 



York, 57; genus Acidaspis, 158. 

 Clinton iron ore, Smyth,_487. 

 Cobalt-solutions, color. Etard, 431. 

 Colloid solutions. Linebarger, 218. 

 Colorado Scientific Society, Proceedings, 



541. 

 Copper smelting, Peters, 167. 

 Coral reef of East Florida, Shaler, 155. 

 Cuvier prize awarded to IT. S. Geol. 

 Survey, 242. 



D 



Dale, T. N., plicated cleavage-foliation, 

 317. 



Dana, E. S., System of Mineralogy, 539. 



Dana, J. D., subdivisions in Archaean 

 history, 454. 



Daubree, A., experimental researches, 

 73. 



Dawson, G. M., upturned Cretaceous 

 beds of British America, 433. 



Densitj' of water varied with the tem- 

 perature. Mendeleeff, 239. 



Dictionary, English-German and Ger- 

 man-English, Fliigel, 542. 



Dielectric constant and conductivity, 

 Bouty, 432. 



Ditte, A., Lecons sur les Metaux, 335. 



Dodge, W. W., Upper Silurian strata 

 near Penobscot Bay, Me., 412. 



E 



Edwards, A. M.. Hudson River, "Fiord," 



182. 

 Elastic lengthening, law of, Thompson, 



32. 

 Electrical and coronoidal discharges, 



Pupin, 463. 



waves, Lecher, 432 ; Hertz on the 

 propagation of, 535. 

 Electricity and Light, Maxwell's Theory, 



Boltzmann, 536. 

 Electricity and Magnetism, Emtage, 155. 

 Elliot, D. (II., inheritance of acquired 



characters, 338. 

 Emerson, B. K., Holyoke and Deerfield 



trap sheets, 146. 

 Emtage, W. T. A., Introduction to the 



Mathematical theory of Electricity 



and Magnetism, 155. 

 Engelhardt. H, Tertiarpflanzen von 



Chile, 335 ; Miocene plants of north- 

 ern Bohemia, 336. 

 Engler, A.. Die naturlichen Pflanzen- 



familien, ' Nos. 68, 69, 162. 



Farrington, O. C, chemical composition 



of iolite, 13. 

 Flames, suspended matter in, Stokes, 



331. 

 Foote, A. E., meteoric iron from Garrett 



Co., Md., 64. 

 Fungoid growths, effect on gold, Liver- 



sidge, 245. 

 Fusion, relation of melting point to, 



Barus, 56. 



G 



Gas analysis, Hempel, 334. 

 Genth, F. A., contributions to min- 

 eralogy, 184. 

 Geological annual, Carez and Douville, 



436. 

 Geol. Survey, IT. S., Cuvier prize 



awarded to, 242. 

 Geological Reports and Surveys — 



Arkansas, 1890, 159. 



Canada, 77. 



Pennsylvania, Lesley, 536. 



Kentucky, Sullivan, 80. 



U. S., tenth annual report, Powell, 1 55. 



Geologists, International Congress, 

 bibliography, 71. 

 Geology — 



Acidaspis, genus, Clarke, 158. 



Algae, fossil calcareous, Rothpletz, 337. 



Archaean history, subdivisions in, 

 Dane, 454. 



