



INDEX TO VOLUME VII. 



Artificial crystallization of gems, Ebelman. 

 427. 



Ashes, analysis of, Fleitmann, 292. 



Asteroid, Diana, not discovered, 290. 



Astronomical clock with galvanic register, 

 206. * 



Atmosphere, height of plane of vapor of, 

 in tropics, J. C. Ross, 315. 



Auckland islands, 322. 



Auroral bow of April 7, 1847, E. C. Herrick, 

 126. 



Aurora borealis of Nov. 17, 1848, 127, 293. 



of Oct., 1839, J. C. Ross, 315. 



Aurora austral is, J. C. Ross, 322. 



Australia, flood in, 130. 



, expedition into, projected by Mr. Ken- 

 nedy, 137. 

 ■, mines in, 133. 



A. 



Academy of Nat. Sci. Philad., proceedings 



of, 458. 

 Acid springs of Onondaga salt group, T. S. 



Hunt, 175. 

 • , sebacic, action of nitric acid on, A. 



Schlieper, 420. 

 jEgean, fauna of, 300. j 



Agassiz, Bibliographia of, noticed, 454. 

 Alabama, nummulites of, 114. I 



Albite of Upper California. 253. j 



Albumen, new products from decomposition 



of, 107. 



, analyse* of, 110. 



Ale. inorganic constituents of, 102. 



Alexander, J. H., new formula for interpola- 

 tions, 14. 



•, new protractor for trisecting angles, 



•, new table of pressure of steam at vari- 

 ous temperatures, 361. 

 Alexander, S., fundamental principles of 



mathematics, 178, 329. 



•, on the common origin of the small plan- 

 ets, 447. 

 Allophiiae and Gibbsite, B. Silliman, Jr., 411. 



Almanac, observations on an American nau- 

 tical, 123. 

 Amalgamating zinc, new mode of, O. N. 



Stoddard, 431. 

 America, Western, observations on, J. D.\ 

 Dana, 376. 



-, coast of, 377. 



-, mountains of, 380. 



-, rivers and valleys, 284. 



, .forest and prairie regions and ( I Bismuth, telluret of, from Virginia, C.Fisher, 



climatal cause of distribution, 387, 389. Jr., 282. 



American Academy of Arts and Sciences,'' , crystalline polarity of, M. Faraday, 



memoirs of, vol. iii, 149. 425. 



•, proceedings of, 458. 





Axinite in Maine, 286. 



B. 



Dache, A. D., notice of work by, on magnetic 

 and meteorological observations of Girard 

 College, 455. 



Bailey, J. W., on the Navicula Spencerii, in 

 reply to Mr. Quekett, 265. 



, infusoria of Maryland, 437. 



Banka, on the island of, T. Ho r 8 field, 86. 

 Basaltic rocks, and columns, Kerguelen'a 



Islands, 318. 

 Beeswax, B. C. Brodie on, 427. 

 Berkeley's theory of vision, D. Brewster, 273. 



ibid, WheweU, 274. 



Birds of Mexico, G. A. McCall, 1 14. 

 , new species of, J. Cassin, 115. 



American Association for the Promotion of 



Science, titles of J. Hall's memoirs read 



before, 151. 

 American Ethnological Society, transactions 



of, 456. 

 Analysis, chemical, J. E. Bowman's work I Bourbon, birds of isle of, 65. 



Bittern of a saline on the Kiskiminetas, 74. 



Blast furnaces of Ystalyfera, use of gases of, 



J. Palmer Budd, 303. 



Bond, G. P., a new comet, April 11, 1849, 



449. 

 Boring of Mollusca, A. Hancock, 288. 



on, noticed, 45j. 



of several minerals, 113. 



of lavas of fbcla, 114. 



of the Braunau meteoric iron, 171. 



of ashes, Fleitmann, 292. 



of American minerals, J. D. Whitney, 



433,434,435. 



Angles, protractor for trisecting, J. H Alex- 

 ander, 243. 



Antarctic voyage of J. C. Ross, reviewed, 



313. 



., departure for the Antarctic, 



324. 



continent, seen by J. C. Ross, 325. 

 volcanoes of, 328, 329. 



Bowman, J. E., on chemical analysis, noticed, 



455. 

 Boyt, M. H., bittern of a saline on the Kit- 



kirainetas, 74. 



Brandisite, analysis of, 113. 



Brnunau meteoric iron, N. W. Fischer, 171. 



Brazil, compact diamond of, 433. 



Brewster, D., on Berkeley's theory of xkion, 



273. 

 British Association Reports, for 1848, 270 and 



beyond. 

 Brodie, B. C, on wax. 427. 

 Bromine in a bittern, M H. Boyi, 74. 



, new mode of detecting, 106. 



Brown, existence of color, 129. 



Arkansite* identical with Brookite, J. D. Brucite, nemalite identical with, 434. 

 Whitney, 433. \\Brucke,E., on the color brown, 129. 



