﻿INDEX. 



489 



Chemistry — 



Molecular weights, determination of, 



by freezing-point, 476. 

 Nitrates in plants, 75. 

 Scale, analysis of crystalline, 318. 

 Silver nitrate, heat produced by re- 

 action on solutions of metallic chlo- 

 rides, 319. 

 Sulphuric acid, with water, magnetic 



rotation of, 477. 

 Water of crystalization, 231. 



Chester, A. EL, Catalogue of minerals, 

 325. 



Chittenden, R. H., Studies in physiolog- 

 ical chemistry, 161. 



Claassen. E., analysis of biotite, 244. 



Clarke. F. IF., turquois from New Mex- 

 ico, 211; lithia micas, 353. 



Comet C, 1886, spectrum, Sherman, 157. 



Cooke, J. P., chemical contributions of 

 Harvard laboratory, 317. 



Critical pressure in solids, 160. 



Crookes, on mosandria, etc., 76; genesis 

 of the elements, 400. 



Cross, W., ptilolite, 117. 



Crystallographic transformations, zoe- 

 trope applied to, 164. 



Dana, E. S,, crystallization of gold, 132 ; 

 meteorites from Utah and Missouri, 

 226 ; catalogue of meteorites in the 

 museum of Yale College, Appendix; 

 brookite from Arkansas, 314 ; miner- 

 alogical notes, 386 ; crystallization of 

 native copper, 413. 



Dana, J. D., terms applied to meta- 

 morphism and porphyritic structure, 

 69; Forms of Volcanoes, 234; Ta- 

 conic stratigraphy and fossils, 236; 

 Onus probandi left for others, 240 ; 

 A dissected volcanic mountain, 247. 



Darwin, G. H., geological time, 390. 



Davenport Academy, Proceedings, 82. 



Davis, W. M., notices of geological 

 papers at American Association, 319; 

 Triassic of Connecticut valley, 342. 



Dawson, W., flora of Laramie of Canada, 

 242. 



Density pipette, 231. 



DesCloizeaux, A., crystallographic notes, 

 204. 



Diller, J. S., peridotite, 121 ; turquois 

 from New Mexico, 211. 



Dudley, W. K., Cayuga Flora, 245. 



Dwkht. W. B., clay-beds on the Hud- 

 son, 241. 



E 



Eakins, L. G., ptilolite, 117. 

 Earthquakes, American, Rockwood, 1. 



Egleston, T., decay of building stones, 



243. 

 Electrical resistance of soft carbon, 



Mendenhall, 218. 

 Electrometer, absolute, 72. 

 Ericsson, J., moon's surface, 326. 

 Etheridge, R., Jr., Blastoidea in British 



Museum, 409. 



F 



Fluorescence, 481. 



Ford, S. W., Billingsia, 325; age of 



Swedish Paradoxides beds, 473. 

 Forbes, S. A., diseases of insects, 81. 

 Forel. Alpine glaciers, 77. 



G 



Geikie, A., Class-book of Geology, 79. 

 Geological papers at American Associa- 

 tion, notices of, Davis, 319. 

 Geological Reports and Surveys — 



India, 78; Nebraska, 321 ; Ohio, 241 ; 



Pennsylvania, 162, 408; U. States, 



maps by, 77. 

 Geological time, Darwin, 390; Nomen- 

 clature, 406. 

 Geology— 



Anticlinals, recent, 324 ; Atlantic ba- 

 sin, age of. Hull, 407. 



Billingsia, Ford, 325 ; Blastoidea in 

 British Museum, 409. 



Cambrian in New York, 322 ; of N. 

 America, Walcott, 138; Chesapeake 

 Bay, topography, 323 ; Clay-beds 

 on the Hudson, 241 ; Cobscook 

 Bay, Shaler, 35 ; Colorado, south- 

 western. 320 ; Conglomerates, ori- 

 gin of, 324; Cretaceous flora, New- 

 berry, 77, 322; Cretaceous on Long 

 Island, 324. 



Devonian. New York, 321 ; Connecti- 

 cut valley, 324. 



Fishes, Devonian and Carboniferous, 

 322. 



Glacial action in Australia, 244 ; Gla- 

 cial ice, thickness of, in Pennsyl- 

 vania. Branner, 362; Glaciation, 

 studies upon, Lewis, 433. 



Holyoke trap range, 323. 



Iron ores, origin of, Irving, 255. 



Lamellibranchiata, Devonian, Wil- 

 liams, 192; Laramie of Canada, 

 flora of, 242 ; Limestone, Tully, 

 320 ; of Chatham. N. Y., and their 

 relation to Hudson R. shales and 

 Taconic, Bishop, 438. 



Marls, New Jersey, Mollusca of, 320, 

 324; Metamorphism, terms applied 

 to, Dana, 69 ; Mollusca of New 

 Jersey marls. 320, 324. 



Niagara, recession of, 322. 



