on of.
-Falconer on.
-in Timor.
-migration into S. America.
-skeleton found by Darwin.
-M. andium, Falconer on intermediate character of.

"Materialism of the Present day," Janet's.

Matteucci on electric fishes.

Matthew, P., on forest trees in Scotland.
-quoted by Darwin as having enunciated principle of Natural Selection
before "Origin."

Maurienne, note on earthquake in province of.

Mauritius, craters of.
-elevation of.
-extinction of snakes of.
-oceanic character of.

Maury's map, as illustrating continental extension.

Maxillaria.

Maypu River, Darwin visits.

Mays, J.A., publishes lectures by Huxley.

Medals:
-(Copley), Darwin, Lyell.
-(Royal).
-(Wollaston), Darwin.

Medical Department of Army, statistics from Director-General of.

Meditation, expression of eyes in.

Mediterranean Islands, flora of.

Medusae, Romanes' work on.

Meehan, T., letter to.

Megalonyx.

Megatherium, Darwin collects bones of.
-Sir A. Carlisle on.

Melastoma, Darwin on.

Melastomaceae, Darwin on.
-crossing in.
-two kinds of stamens in.

Meldola, Prof. Raphael F.R.S.: Professor of Chemistry in Finsbury
Technical College (City and Guilds of London Institute), and a well-
known entomologist; translated and edited Weismann's "Studies in the
Theory of Descent," 1882-83.
-address to Entomological Society.
-letters to.
-translation of Weismann's "Studies in Descent" by.
-on Weismann and Darwin.
-mentioned.

Melipona.

Meloe, Lord Avebury on.

Melrose, seeds from sandpit near.

Memorial to the Chancellor of the Exchequer.

Mendel, G., W. Bateson on his "Principles of Heredity."
-Darwin ignorant of work of.
-Laxton and.

Mendoza, Darwin visits.

"Mental Evolution in Animals," Romanes'.

Mentha, of N. America.
-M. borealis, variety in N. America.

Menura superba, colour and nests of.

Menzies and Cumming, visit Galapagos Islands.

Mercurialis.

Mertensia, Darwin's experiments on.

Mesembryanthemum.

Mesotherium, Falconer on.

Metamorphic schists.

Metamorphism, Darwin on.
-heat and.
-Sorby on.

Metamorphosis, Lord Avebury on insects and.
-F. Muller on.
-Quatrefages on.

Meteorites, Lord Kelvin suggests their agency in introduction of plants.

"Methods of Study," Agassiz' book on.

Mexicans, explanation of natural affinities of Chinese and.

Meyen, on insectivorous plants.

Meyer, Dr., translator of