OB iI 
Obituary of J. N. Nicollet, xlv, 404; 
xvii, 189. 
H. W. M. Olbers, xxxix, 387. 
— B. Oriani, xxv, 186. 
—— T. Ornie, xxiii, 370. 
—— T. Pennant, xxxvil, 146. 
Persoon, xxxii, 215. 
—— H. Pestalozzi, xii, 183. 
—— William Phillips, xv, 160. 
eee Mee As. Picteta xs) 179! 
——. §. D. Poisson, xl, 220. 
—— J. Priestley, xxiv, 28. 
—+—/J, Prince, xxxi, 201 
— C.S. Rafinesque, xl, 221. 
— — Ramond, xv, 177. 
— — Reichenback, xv, 177. 
—— Abel Remusat, xxiii, 371. 
—— James Rennell, xx, 304. 
—Stephen Van _ Rensselaer, 
xxxvi, 156. 
- La Rochefoucald-Liancourt, 
xiii, 167. 
Rodrigues, v, 193. 
— Count Rumford, xix, 28; 
xxxill, 21. 
=—- Thomas Say, xxvii, 393. 
Scarpa, xxv, 184. 
—— IL. D. de Schweinitz, xxvi, 
218. 
Schubert, xv, 177. 
—— G.S. Serullas, xxii, 271. 
—— Charles Silvertop, xl, 220. 
Nathan Smith, xvi, 211. 
—— Wm. Smith, xl, 219. 
—— Smithson, xx, 306. 
——— [,. Simond, xxxiti; 371. 
—— G. Spurzheim, xxii, 356. 
— Sir John St. Aubyn, xl, 220. 
— M. F. de St. Fond, ii, 352. 
~— Edward Thomas, xxii, 380. 
Sir Benjamin Thomson (Count 
Rumford), xix, 28; xxxiii, 21. 
John Trumbull, xlvi, 216. 
—— Edward Turner, xxxii, 218. 
— Vaucher, xliii, 215. 
Benjamin Vaughan, xxix, 395. 
Vigors, xl, 219. 
Vogel, xliti, 215. 
Alexander Volta, xv, 67. 
—— Eli Whitney, xxi, 201.f 
—— F. P. Wilmsen, xxii, 380. 
185 
OC E 
Obituary of Wollaston, xvi, 216; 
xvil, 159. 
Thomas Young, xxii, 232. 
—— F. X. Baron de Zach, xxiv,194. 
Observatory, a new Astronomical, 
at Berne, in Switzerland, vii, 374. 
, letter on, from Encke to A. 
D. Bache, xxxviii, 184. 
, at Cape of Good Hope, 
XXXVill, 95. 
, near Glasgow, xl, 344. 
, at Geneva, xxiii, 390. 
, at Rome, xliv, 373. 
, at Pulkova, astronomical op- 
erations at, xlvii, 88. 
, at St. Petersburg, a new, 
xxviii, 200. 
, at Havana, xlii, 153. 
, remarks on certain, (Cam- 
bridge, Brussels, Calton [Hill at 
Edinburgh,) xxviii, 67, 69. 
, United States, Cambridge, 
xlv, 224. 
. , at Girard College, au- 
thorized, xxxviil, 398. 
——, , 1n Philadelphia, in Rit- 
tenhouse Square, xl, 375. 
———, , of Hudson, Ohio, West- 
ern Reserve College, £. Loomis, 
xxxix, 861, - 
, , of Yale College, lati- 
tude and longitude of, xxxiv, 809. 
, instruments proper for a 
small, xxxvili, 185. 
» magnetical, at Dublin, xxxiv, 
: , establishment of, re- 
commended by the British Asso- 
ciation, xxxvill, 108. 
O’ Brien, L., on a case of transpira- 
tion, xxxix, 400. 
Obsidian, West Indies, i, 237. 
, used for cutting instruments 
by the Mexicans, xvi, 161L.f 
Occultation of Aldebaran, July, 
1830, xix, 170. 
(Ocean, natural history of, v, 128. 
, color of, vi, 198; xxix, 287. 
: , cause of, xvii, 170; 
xxvi, 65.f 
, depth of, v, 180; xl, 407. 
