INDEX. 



Academy of Natural Sciences, letter 

 from the, in relation to a proposed 

 National Museum, 111. 



Acid, chlorohydric, pure, mode of pre- 

 paring, 160. 



Adams, Mr. J. Q., Report to the House 

 of Representatives on Magnetic Ob- 

 servations, &c, 320. 



Adet, M., his death announced, 10. 



Air, moist and dry, results of rarefaction 

 of, 200. 



Airy, Prof., instrument for observing 

 vertical magnetic force by reflection, 

 313. 



Alexander, J. H. Esq., on the construc- 

 tion of a standard barometer, 320. 



Prof. S., description of the aurora 



borealis of Sept. 3, 1839, 132. 



■ on two appearances of late- 

 ral and vertical mirage observed by 

 him, 188. 



presents transparent models 



of crystals, 97. 



Allen, Benj., LL.D., his death an- 

 nounced, 217. 



Mr. Z., of Providence, description 



of a tornado there, 48. 



Andrada e Silva, Don, his death an- 

 nounced, 61. 



Anemometer, Osier's, Mr. Walker on, 3. 



Asphalt of Seyssel, remarks on, by Mr. 

 Strickland, 47. 



Association, American, for the promo- 

 tion of science, proposed, 77. 



Astronomical committee directed to re- 

 port on the High School instruments, 

 and on the subject of an observatory, 

 276. 



— — instruments at the High School ob- 

 servatory, 276. 



observations made by Prof. Loomis, 



129. 



Atmosphere, phenomena connected with 

 the presence of aqueous vapour in the, 

 237. 



Audubon, Mr., his remarks on Wilson, 

 the Ornithologist, noticed by Mr. Ord, 



Aurora Borealis, description of, by Prof. 

 Alexander, 132. 



Bache, Dr., appointed reporter, 24. 



announces the death of John Fred. 



Blumenbach, 188— of Dr. Eberle, 6— 

 of Mr. F. H. Le Comte, of Paris, 60— 

 of Dr. John Newman, of North Caro- 

 lina, 108— of Dr. Jos. Parrish, 188— of 

 Dr. A. Pearson, 62— of Dr. Robt. Per- 

 cival, 117— of Mr. G. Pollok, 98— of 

 the Hon. Jonathan Sewell, of Quebec, 

 157— of Mr. Sullivan, 136— of M. Tal- 

 leyrand, 29 — of Mr. Wickham, of Vir- 

 ginia, 74. 



presents a translation of an obituary 



notice of Prof. Rask, of Copenhagen, 

 104. 



on a worm in the eye of the horse, 



201. 



Bache, Prof, appointed reporter, 74. 



on electricity from a stove, 324. 



compares Prof. Loomis's observa- 

 tions on the magnetic dip with those 

 of Prof. Courtenay and himself, 146. 



on a convenient mode for deter- 

 mining the magnetic dip and inten- 

 sity, by Prof. Lloyd, 77. 



on the magnetic declination on the 



February magnetic term day, 1840, 

 294. 



experiments on the magnetic dip, 



294. 



on the simultaneous changes of 



magnetic intensity at .Gottingen and 

 Munich, 200. 



observations of the magnetic inten- 

 sity at twenty-one stations in Europe, 

 181, 185. 



resolutions of, regarding magnetic 



observations, 320. 



reads an extract from a letter from 



Major Sabine, on contemporaneous 

 magnetic and meteorological observa- 

 tions, &c. 169. 



presents a chart of magnetic obser- 

 vations for Feb. 28, 1840, 200. 



on the measures taken by the Bri- 

 tish government for obtaining a series 

 of magnetic observations in different 

 quarters of the globe, 117. 



on combined magnetic observa- 

 tions, 242. 



