SEP 
Seawater, absorption of light by, v, 
134. 
——, marine animals in, v, 134. 
, color of, vi, 198; xxix, 237. 
, cause of color of, xxvi, 65.f 
, color of, due in part to iodine 
and bromine, xvil, 170. 
, density at different depths in 
the Mediterranean, xvii, 364. 
, distillation of, ii, 381. 
——, distilled, use of, i, 172. 
, luminousness or phosphores- 
cence of, v, 188; xvii, 209; 
xvill, 166, 187; xxxv, 372; xxxvl, 
208. 
, saltness of ocean, v, 181. 
,» H. Humphreys, xlix, 
9 
208. 
9 
xxill, 10. 
, Specific gravity, v, 129. 
, temperature in different parts, 
v, 129; xxv, 130. 
, at great depths, xvil, 
, at different depths, 
9 
295. 
different 
at depths, 
xxi, 10. 
Seaweeds of the Atlantic, xx, 181. 
Sedgwick, A., Cambrian system of, 
XXXvil, 220. 
, address before the Geological 
Society of London, xxi, 186. 
, letter to R. Elton, xlvi, 403. 
Sediment from the Mersey, xxxiii, 
269. 
229 
Seely, L., garnet locality, iii, 241. 
Segregation theory of veins, ob- 
jections to, from facts in Maine, 
C. T. Jackson, xxxvi, 148. 
Seiber’s Journey into Abyssinia, 
announced, iv, 383. 
Selby, P. J., notice of, xxxvil, 164. 
Selenite, see Gypsum. 
Selenium, a new metal, i, 310. 
Seleniuret of lead, xviii, 891; xix, 
369. . 
and mercury, xviii, 391. 
of palladium, xix, 369. 
Selloa nudata, v, 300. 
Seminole Indians, notice of, ix, 182. 
Septaria, large, xxvi, 217. 
29 
SEY 
Serbian, or miloschin, xlii, 386. 
Serapis, temple of, account of the 
changes of level in, C. Babbage, 
xxvii, 408. 
Series, new algebraic, vii, 278; 
vill, 1815; ix, 98, 293. 
Serpent rock of Lake Huron, iii, 
258.f 
Serpentine, metamorphic, through 
the agency of heated waters, xlv, 
120. 
, crystallized, at Warwick, N. 
Y., 1xge242. 
, in Tenos, Grecian Archipel- 
ago, xxxl, 176. 
of the vicinity of Hudson’s 
Bay, xvii, 12. 
, In Canada, viii, 68. 
, in Connecticut, vi, 227. 
, in Delaware, v, 240. 
, in Maryland, xviii, 80; xxiv, 
S49 XXVI Oy 
, in Massachusetts, 1, 114, 137; 
1,236; i, 288; v, 268; vi, 
2273 vill, 495 ix, 435 7x,213; 
xl, 260; xxii, 29. 
, in New Jersey, 1, 195; iv, 
16; v, 29. 
, in New York, vil, 57; ix, 39, 
42; xix, 225, 228; xxv, 349. 
, in Pennsylvania, vill, 237; 
KIVe to Ow La: 
, in Rhode Island, viii, 225, 
228) 371x, oll: 
, in Vermont, ii,'76; v, 40; 
ZH 3 wily) Seu, 2249 :) xiii, 2OO!; 
xxxv, 390; (marble) xxxviil, 198. 
Serres, Marcel de, on some new 
bone caves, xxi, 56. 
Serullas, G. S., elected a member 
of the French Academy, xviii, 
185. 
, on iodic acid, and morphine, 
xx, 184. 
, obituary notice of, xxii, 371. 
Sewell Mountains, xxix, 98. 
Sewers, furnace for ventilating, vii, 
inde 
, cleansing of, xviii, 161. 
Sexes, proportion of, viil, 376. 
Seybert, A., notice of, i, 37. 
