----, volcanoes, 447.

Mules sometimes prolific, 601.

Murchison, Sir R., on the Hartz mountains, 48.
----, on tertiary deposits of the Alps, 119.
----, on geography of Siberia, 78, 84, 124.
----, map of Russia, 123.
----, on depression of Caspian, 157.
----, on travertin of Tivoli, 245.
----, on tertiary deposits of Alps, 124.

Muschelkalk, 193.

_Mydaus meliceps_, 639.

_Myrmecobius, fasciatus_, 138.

_Mytilus polymorphus_, 652.

N.

Nantucket, banks of, 293.

Naples, volcanic district round, 361.
----, recent tertiary strata near, 74.

Narwal stranded near Boston, 771.
----, fossil near Lewes, 769.

Nasmyth, Mr., on non-conductibility of dry sand and clay, 418.

Needles of Isle of Wight, 318.

Negro physiognomy traced back 3000 years, 660.

Neill on whales stranded, 771.

Nelson, Lieut, on coral reefs, 798.

Neptune, temple of, under water, 516.

Neptunists and Vulcanists, rival factions of, 50, 55.

Nerbuddah, river, 705.

Newbold, Lieut., on mud of Nile, 262.

Newfoundland cattle mired in bogs of, 723.

Newhaven, its cliffs undermined, 317.

New Holland, plants of, 112, 614.
----, animals of, 630.
----, coral reefs of, 776, 791.

New Kameni, formation of, 443.

New Madrid, U. S., earthquakes at, 350, 466.

New Zealand, animals in, 635.
----, tree ferns in, 89.

Niagara, Falls of, 214.
----, their recession, 217, 218.
----, height of, 216.

Niccolini, M., on Temple of Serapis, 518.

Nicolosi destroyed by earthquake, 399.

Nile, R., delta of the, 261.
----, cities buried under blown sand near the, 726.
----, swept away by flood of, 753.

Nilson, M., on subsidence of Scania, 530.
----, on migrations of eels, 648.

Nitrogen in springs, 710.

Nomenclature of geology, remarks on, 158.

Norfolk, waste of cliffs of, 305.
----, gain of land on coast of, 308.

North Cape, drift-wood on, 745.

Northumberland, land destroyed by sea in, 303.

Norway free from earthquakes, 531.
----, rise of land in, 192, 527, 529.

Norwich once situated on an arm of the sea, 307.

Norwich Crag, fossils of, 142.

Nova Scotia, rise of tides in, 332.

Nummulitic limestone, 124.

Nymphs, temple of, under water, 516.

Nyoe, a new island formed in 1783, 425, 432.

O.

Obi, E., fossils on shores of, 81.

Ocean, permanency of its level, 518.

Odoardi