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Liebig's computation of carbon in
plants, 133.

Liliaceæ, 27.

Limnoria terebrans in harbours, 36.
Lingula, 32, 212.

Lingula Zone of Wales, 70.

Linnæus' classification of nature, 25.
essays in the Amoenitates Aca-
demicæ, 170.

on Primitive Types, 195.
Lizard (Gecko), sucker-feet, 41.
Llandeilo formation, 72.

Llandovery Rocks, 75.
Lobster, bending tail of the, 34.
Ludlow zone, 76.

Lutraria digging into sand, 36.
Lycopodiaceæ, 27, 144.

Lyell, Sir C., shell in fossil tree found
by, 116.

on Climate, 152.

on the Germs of Life, 187.

M.

Malvern, antiquity of land, 168.
Mammalia, numerical distribution, 12.
rearing their young, 30.

Marine animals, changes with elapsed
time, 84.

-invertebral life, successive systems,

81.

- invertebrata in Lower Palæozoic
Strata, table, 78.

Marsupialia fossil, 119.

Medusidæ, 32.

Milne Edwards, his generalization of

the Paleozoic Corals, 86.

Moa of New Zealand, 118.

Modiolæ traced in coral, 36.
Mole, claws of the, 43.

Mollusca, eye-spots, 10; description
of, 28.

Mollusca, shell-covered, 32.
Monkeys, remains of, 149.
Monocotyledones, 27.
Monomyaria, 94.

Morris, estimate of thickness of strata,
52.

Movements in air by animals, 37.
Murchison's Siluria, 71.
Musaceæ, 144.

Mya digging into sand, 36.
Myriophyllum verticillatum, 20.
Mytilus, 32.

N.

Narbonne, early human remains at,

48.

Natural Selection, 200, 215, 216.
Nature, the expression of a Divine
Idea, 3.

the forces of, 5.

the laws of, 5.

Nautilus (Argonauta), 33.

Niagara Falls, computation of time
by recession of, 140.
Nipadaceæ, 145.

Notonecta, motion of the, 34.

Nova Scotia, Sigillaria (fossil tree)
found in, 116.
Nymphæa alba, 20.

0.

Oldhamia found at Bray, 70.
Olenus, 71.

Ostrich, the, 24.

wing bones, 43.

Otter, webbed feet of the, 34.

P.

Palinurus, flexible tail of, 35.
Palissy's observations, 175,

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