cH A 
Cement for iron water pipes, xvill, 
394, 
——, as a covering of houses, ii, 
220. 
from shells and oil, xxx, 168. 
from iron filings, xix, 190. 
——., water, lime for, ili, 230. 
; , from Southington, Ct., 
xili, 382. 
of the Castle Rock, Quebec, 
F. H. Baddeley, xxviii, 367. 
, Fuchs on, xxxii, 200. 
Census, earliest, of the U. States, 
XXxill, 278. 
Central forces, T. Strong, xvi, 293 ; 
xvil, 69, 329; xvili, 67; xix, 46; 
xx, 65, 291; xxi, 66, 334; xxii, 
132, 343; xxiv, 40. 
Cerium, atomic weight of, xlvii, 190. 
and didymium, method of sep- 
arating the oxides of, xlvi, 206. 
Cetine, a new carburetted hydro- 
gen, xxx, 180. 
Ceylon, mineralogy of, vi, 192. 
, notices of, vill, 186. 
Chabazite, analysis of, C. Cramer, 
xxx, 366. ; 
65. 
, in Connecticut, xxxv, 179. 
vi, 2243 vii, 2543 vill, 45. 
, in New Jersey, v, 239; xliv, 
58. 
——, in New York, ix, 41. 
; in Nova Scotia, xxx, 349. 
, in Pennsylvania, xiv, 7. 
, supposed, from Maryland, 
near Baltimore, (Haydenite,) 1, 
307; xlvi, 379.f 
Cheropotamus, xxxvil, 231. 
Chalcedony, stalactites of, New 
South Shetland, iv, 26. 
, localities of, in the U. States, 
15 LSQNS4 sire O ieee el eieviii. 
49; viii, 64; x, 219,224; xvii, 
78. 
Chalk, coralline animalcules in, 
XXxIx, 205. 
, corals and entomostraca in, 
xxx, 382. 
A6 
, localities of, in Canada, viii, | 
, in Massachusetts, 1, 114, 184 ;) 
CHA 
Chalk of France, viii, 216. 
, see farther, Cretaceous. 
Chalybeate waters, action of cork 
on, vill, 390. 
, artificial mode of ma- 
king, vill, 105; xi, 392. 
Chameleon, change of color, xxviii, 
9), 
Champion, G., ‘geology, scenery, 
&c., of the Cape of Good Hope, 
xx1x, 230. 
Channing, W. F., observations on 
photographic processes, xlili, 73. 
Chapin, A. B., junction of trap and 
sandstone, at Wallingford, Ct., 
xxvil, 104.f 
Chaptal, J. A., biography of, xxvi, 
127s 
‘Charcoal, remarks on, xii, 389. 
» manufacture of, xxi, 156. 
, a cheap mode of manufactur- 
ing, xxvi, 188. 
, decoloring action of, xvi, 393. 
, bitterness of some substances 
removed by, xxi, 374. 
, report on Dumont’s prepared, 
xxill, 846.f 
, animal, effect of, in prevent- 
ing the putrefaction of stagnant 
water, x, 189. 
5 , action of, R. Warring- 
ton, xlix, 398. 
, fusion of, B. Silliman, v, 
108, 3861; vi, 341, 349, 378; 
vill, 147; x, 109, 119. 
» —, J. Griscom, v, 364. 
—., —, R. Hare, vii, 288; x, 
111, 118; xxxviii, 190. 
> ——_, L. Vanuxem, viii, 292 ; 
x, 102. 
‘Charlatanism, or selling pharma- 
ceutical preparations under false 
denominations, in Paris, xviil,401. 
Charring wood, new mode of, by 
I. Doolittle, xvii, 395.f 
at low temperatures, 
xx, 189. 
Chart, magnetic, of the U. States, H. 
Loomis, xxxiv, 290f ; xxxix, 41. 
Chathamite, xlvii, 850; xlvii, 175, 
179. 
