FOR 
Footprints, American, C. Lyell on, 
inthe Connecticut valley, xlv, 394. 
: , W. C. Redfield, notice 
of fossil, at Middletown, Ct., 
xxxill, 201. 
; > ——, in new red sand- 
stone of New Jersey, xliv, 134. 
Middletown, Ct., xxxi, 165. 
——, ——, A. T. King on, in 
Westmoreland Co., Pa., xlviii, 
217, 343°; xlix, 216.f 
. , H. R. Schoolcraft, on 
human, in limestone near St. Lou- 
1S; V, 220.1 
. , anon., remarks on ibid, 
Xxxill, 398. 
> ——, D. D. Owen, ibid, xiii, 
14.f 
> —_, W. A. Adams, ibid, 
xliv, 200. 
, foreign, in England, in Che- 
89 
, anon., in sandstone at} 
shire, (Cheirotherium,) xxxvi, 
397; xliv, 370. 
9 9 
xxxv, 307. 
‘ , near Shrewsbu- 
ry, Xxxvill, 127. 
) , , of Cheirotheri- 
um, at the Storeton quarries, xxxvl, 
394; xxxvil, 223. 
: , in Germany, at Hild- 
burghausen, xxx, 191. 
» ——, in Saxony, B. Cotta, 
XXXvlll, 255.f 
; , in Scotland, xiv, 394; 
xv, 84. 
, remark on localities, xxxi, 164. 
, bearing of the discovery of 
Dinornis on, xlviii, 199. 
Foraminifera in the green sand of 
New Jersey, xli, 213. 
Forbes, J. D., absorption of light by 
the atmosphere, x!vi, 200. 
, on radiant heat, xl, 318. 
, polarization of heat, and on 
the claims of discovery, xl, 317. 
, Bakerian lecture, notice of, 
xlvi, 200. 
FOR 
Forces, central, of bodies revolving 
about fixed axes, J. Martin, 
Xxxix, 262.f 
4 , I. Strong, xvi, 283; 
xvii, 69, 329; xvill, 67; xix, 46; 
xx, 65, 291; xxi, 66, 834; xxii, 
132, 342; xxiv, 40. 
, composition and resolution of, 
T. Strong, xxvii, 85. 
, parallelogram of, T. Strong, 
xxvl, 304; xxix, 345. 
»>—, A. C. Twining, xlvi, 
324.f 
, condition of equilibrium be- 
tween living and dead, xlvii, 
241 
Forgery, a mode of preventing, J. 
Atwater and S. S. Jocelyn, xv, 
398. 
Forman, J., salt formation of Salina 
and elsewhere, New York, xix, 
141. 
Formic acid, artificial, vii, 197. 
, near Liverpool, jj 
, on the production of, 
xix, 374. 
——, —, M. Dobereiner, 
xxvill, 126. 
f , Gobel’s observa- 
tions on, xxvill, 127. 
, utility of, and theory of 
its formation, J. P. Emmet, xxxii, 
140. 
Forry, S., on the climate of the U. 
States, and general distribution 
of heat over the globe, xlvii, 18°, 
221. 
, notice of a work on the cli- 
mate of the U. States, by, xliv, 
193. 
Forshey, C. G., Indian mounds and 
relics near Natchez, xl, 376. 
; in Louisiana, 
xlix, 38.f 
, on the meteors of April, 1841, 
xlii, 397. 
Forts around Boston, J. Finch, viii, 
338. 
Fort Lawrence, account of, S. P. 
Hildreth, xxx, 57. 
, Travels in the Alps, notice of, 
xlvi, 172. 
Macintosh, notice of, xxxl, 
19. 
