–trap dikes in Dorchester and Canaan, 105f;
ibid, Wentworth, 107; ibid, at the fulls of the Campton, 108f;
tourmalines and diluvial scratches in Rumney, 107;
trap dikes on Red Hill, 111;
ibid, Moultonboro', Tamworth and Eaton, 112, 113.f
—, geological observations on, O. P. Hubbard, xxxiv, 105;
trap and granite boulders, and granite veins, 112;
blende, and galena near Eaton, 114;
White Mountains, 115;
effects of the deluge of August, 1826, 115;