—, —, in Germany, in 1830, xx, 175.
— of American geologists in 1840, xxxix, 189;
in 1841, xli, 158;
1842, xliii, 146;
1843, xlv, 135, 310;
1844, xlvii, 94;
1845, xlix, 219.
— — —, address before, by E. Hitchcock, xli, 232.
— — —, ibid, by B. Silliman, xliii, 217.
— — —, address before, by H. D. Rogers, xlvii, 137, 247.