Murchison, Sir R., on cleavage. —on waves transporting gravel. —on origin of salt formations. —on the relations of metalliferous veins and intrusive rocks. —on the absence of granite in the Ural.
Nautilus d’Orbignyanus.
Navidad, tertiary formations of, subsidence of.
Negro, Rio, pumice of pebbles of. —gravel of. —salt lakes of. —tertiary strata of.
North America, fossil remains of.
North Wales, sloping terraces absent in. —bent cleavage of.
Neuvo Gulf, plains of. —tertiary formation of.
Owen, Professor, on fossil mammiferous remains.
Palmer, Mr., on transportation of gravel.
Pampas, elevation of. —earthquakes of. —formation of. —localities in which fossil mammifers have been found.