Lingula, persistence of. -Silurian species.

Link, on Alpine and Arctic plants.

Linnaeus.

Linnean Society, Bentham's address. -Collier's picture of Darwin in rooms of. -Darwin's paper on Linum. -Darwin advises Bates to give his views on species before. -Wallace's paper on the Malayan papilionidae.

Linnet, a migratory bird.

Linope, E. Hackel on.

Linum, Darwin's work on. -dimorphism of. -interaction of pollen and stigma. -mucus in seeds of.

Linum flavum. -L. grandiflorum, two forms of. -L. Lewisii, experiments on. -L. trigynum. -L. usitatissimum, circumnutation of.

Lister, Lord, on spines of Hedgehog.

Listera, fertilisation of. -L. cordata, fertilisation of. -L. ovata, fertilisation of.

Litchfield, Mrs. (see Darwin, Henrietta). -criticism of Huxley.

Littoral shells, glacial period and.

Liverpool, British Association meeting at (1870).

Livingstone, D., on the distribution of thorny plants.

Lobelia, Darwin's experiments on. -fertilisation mechanism of. -fertility of. -L. fulgens, Scott's experiments on.

Lochaber, Parallel Roads of (see also Glen Roy). -evidence of ice-action.

Lochs, Laggan (Loggan), ice-action in. -Roy, Darwin disbelieves in existence of. -Spey, shelves of. -Treig, ice-action in. -Milne's account of.

Locust grass, germination of.

Locusts, blown out to sea. -plants from dung of.

Logwood, leaf-movement of. -See Haematoxylon.

Loiseleuria procumbens.

London clay, supposed germination of seeds from.

"London Review," Darwin's opinion of. -correspondence between Owen and editor in reference to "Origin."

Longchamps, L. de, on crossing in Gramineae.

Longevity, Darwin on animals' and man's.

Lonsdale, William (1794-1871): obtained a commission in the 4th Regiment at the age of sixteen, and served at Salamanca and Waterloo. From 1829 to 1842 he held the office of Assistant-Secretary and Curator of the Geological Society. Mr. Lonsdale contributed important papers on the Devonian System, the Oolitic Rocks, and on palaeontological subjects. ("Quart. Journ. Geol. Soc." Volume XXVIII., page xxxv., 1872.) -mentioned.

Lopezia, fertilisation of.

Lophura viellottii, colour of.

Loss, nature of.

Love, evidence of existence low in scale.

Loven, S.L.: published numerous papers on Cirripedes and other zoological subjects in the Stockholm "Ofversigt" and elsewhere between 1838 and 1882. -translation of paper on Cirripedes. -mentioned.

Lowe, R.T., on Madeira.

Lowell, Prof., on custom in Italy of shaking head in affirmation.

Lowland plants, ascending mountains.

Lowne, B.T., on anatomy of blowfly.

Lowness and highness.

Lubbock, Lady.

Lubbock, Sir J., see Lord Avebury.

Lucas, Dr. P., on tendency to vary independent of conditions.

Ludwig, F., letter to.

Lumbricus (see also Earthworms).

Luminosity in animals. -result of external conditions.

Lupinus, Darwin's experiments on.

Luzula.

Lychnis dioica, structure of flower. -sets seed without pollen.

Lycopodium, variation in.

Lyell, Sir Charles, Bart., F.R.S. (1797-1875): was born at Kinnordy, the family home in central Forfarshire. At the age of seventeen he entered at Exeter College, Oxford, and afterwards obtained a second class in the final Honours School in Classics. As an undergraduate Lyell attended Prof. Buckland's lectures on Geology. On leaving Oxford Lyell was entered at Lincoln's Inn; a weakness of the eyes soon compelled him to give up reading, and he travelled abroad, finding many opportunities for field work. He was called to the Bar in 1825, and in the same year published some papers on geological subjects. From 1823-26 Lyell filled the post of Secretary to the Geological Society, and in 1826 was elected into the Royal Society. In 1830 the first volume of the "Principles of Geology" was published; the second volume appeared two years later. Speaking of this greatest of Lyell's services to Geology, Huxley writes: "I have recently read afresh the first edition of the "Principles of Geology," and when I consider that this remarkable book had been nearly thirty years in everybody's hands [in 1859], and that it brings home to any reader of ordinary intelligence a great principle and a great fact-- the principle that the past must be explained by the present, unless good cause be shown to the contrary; and the fact that, so far as our knowledge of the past history of life on our globe goes, no such cause can be shown--I cannot but believe that Lyell, for others, as for myself, was the chief agent in smoothing the road for Darwin" (Huxley's "Life and Letters," Volume II., page 190).

Charles Darwin

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