INDEX TO VOLUME XLIII. 



Acarus Crossi, 395. 



species of, noticed, 205. 



Adams, C. B., on a new species of Thra- 

 cia, 145. 



Agassiz's Monographie d'Echinodermes, 

 390. 



Agriculture of Massachusetts, fourth re- 

 port on, 202. 



Albumen, vegetable and animal, 402. 



Algebra, Perkins's, 380. 



Sherwin's treatise on, 190. 



Allen, Z., observations on the Provi- 

 dence tornado, 137, 264. 



American Geologists and Naturalists, 

 proceedings of third annual meeting 

 146. 



Prof. Silliman's 

 address before, 217. 



Anderson, P., on foot-prints in solid lime- 

 stone, 14. 



Anthracite, porous, of Virginia, 175. 



Appalachian chain, structure of, 177, 180 



Archimedes, fossil, 19. 



Ashes, wood, properties of, 80. 



B. 



Bacillaria, sketch of, 321. 



Bailey, J. W., sketch of the Infusoria of 



the family Bacillaria, 32) . 

 Bond, W. C., observations on the meteor 



of Nov. 10th, 1841, 399. 

 Botanical necrology, 214. 



Text Book, Gray's, 388. 

 Botany, London Journal of, 189, 385. 

 Bowlders, distribution of, 163. 

 British Association, proceedings of, 367. 



C. 



Calstron-baryte not a mineralogical spe- 

 cies, 366. 



Cambridge Miscellany, 392. 



Carbon, use of in Grove's battery, 393. 



Caricography, 90. 



Carreno, M., death of, 215. 



Caseine, vegetable and animal, 402. 



Catlin's Letters and Notes on the North 

 American Indians, 203. 



Channing, W. F., on photographic pro- 

 cesses, 73. 



Chelonia Couperi, anew fossil mammal, 

 144. 



Chemistry, Liebig's Animal, 379. 



Chlorine in meteoric iron, 169, 359. 



Coal mines in the vicinity of Richmond, 

 Va., 1. 



rocks of Virginia, age of, 175. 



Coke, natural, of Virginia, 175. 



Colman's Report on the Agriculture of 

 Massachusetts, 202. 



Connecticut, catalogue of the mammalia 

 of, 345. 



Copper ores in Wisconsin, 38. 



Corn, Indian, oil of, 403. 



Couthouy, J. P., remarks on elevation 

 of the earth's surface, 153. 



remarks on icebergs, 

 154. 



Currents, permanent system of, connect- 

 ed with the earth's rotation, 152. 



Cuscutineae, North American, monogra- 

 phy of, 333. 



D. 



Daguerreotype experiment by galvanic 

 light, 185. 



Dana's Muck Manual for Farmers, 192. 



Darlington, W., notice of Gray's Botan- 

 ical Text Book, 388. 



Davis's Manual of Magnetism, 381. 



Dewey, C, on caricography, 90. 



obituary of Prof. Amos Ea- 

 ton, 215. 



Didym, a new metal, 404. 



Diluvial action, evidences of in the Ap- 

 palachian chain, 181. 



scratches, how produced, 163. 



Dobson, Peter, Mr. Murchison's tribute 

 to, 200. 



Don, Prof D., obituary of, 214. 



Drift, deposited during a period of sub- 

 sidence, 152. 



phenomena of, 151, 163. 



E. 



Eaton, Prof A., obituary notice of, 215. 

 Echinellea of the family Bacillaria, 321. 

 Echinodermata, Agassiz's monograph of, 



390. 

 JEclipse, solar, of July 8th, 1842, 401. 

 jEhrenberg's notices of American infu- 

 1 soria, 393. 



Electrotype, Zantedeschi's memoir on, 

 i 390. 



Emmet, J. P., death of, 404. 

 jEngelmann, G., monography of the 

 1 North American Cuscutineae, 333. 

 Espy, J. P., meteorological notice, 401. 

 Euclase, discovery of in Connecticut, 

 I 366. 

 Exploring expedition, U. S., 208. 



F. 



Farmers, Muck Manual for, 192. 

 Fibrine, vegetable and animal, 402. 



