-monkeys.
-mammals.
-co-existence with recent shells.

Eozoon, illustrating difficulty of distinguishing organic and inorganic
bodies.

Ephemera dimidiatum, Lord Avebury on.

Epidendreae, closely related to Malaxeae.

Epidendrum, Cruger on fertilisation of.
-self-fertilisation of.

Epiontology, De Candolle's term.

Epipactis, fertilisation mechanism.
-F. Muller on.
-pollinia of.
-E. palustris, fertilisation mechanism.

Epithecia, fertilisation mechanism.

Equatorial refrigeration.

Equus, Marsh's work on.
-geographical distribution.
-in N. and S. America.

Erica tetralix, Darwin on.

Erigeron canadense, successful immigrant from America.

Erodium cicutarium, introduced from Spain to America.
-range in U.S.A.

Erratic blocks, in Azores.
-in S. America.
-Darwin on transport.
-of Jura.
-Mackintosh on.
-on Moel Tryfan.

Errera, Prof. L., letter to.
-and S. Gevaert, on cross and self-fertilisation.

Eruptions, parallelism of lines of, with coast-lines.

Eryngium maritimum, bloom on.

Erythrina, MacArthur on.
-of New S. Wales.
-sleep movements of.

Erythroxylon, dimorphism of sub-genus of.

Eschscholtzia, crossing and self-fertility.
-Darwin's experiments on self-sterility.
-F. Muller's experiments in crossing.

Eschricht, on lanugo on human embryo.

Escombe, F., on vitality of seeds.
-see Brown, H.T.

Esquimaux, Natural Selection and.

"Essays and Reviews," attitude of laymen towards.

Eternity, Gapitche on.

Etheridge, Robert, F.R.S.: President of Geological Society in 1880-81.

Etna, Sir Charles Lyell's work on.
-map of.

Eucalyptus, species setting seed.
-mentioned.

Euonymus europaeus, dispersal of seeds.

Euphorbia, Darwin on roots of.
-E. peplis, bloom on.

Euphrasia, parasitism of.

Europe, movement of.

Eurybia argophylla, musk-tree of Tasmania, an arborescent Composite.

Evergreen vegetation, connection with humid and equable climate.

Evolution, Darwin's early views.
-Fossil Cephalopods used by Hyatt as test of.
-Huxley's lectures on.
-of mental traits.
-F. Muller's contributions to.
-Nageli's Essay, "Entstehung und Begriff der Naturhistorischen Art."
-Palaeontology as illustrating.
-Romanes' lecture on.
-Saporta's belief in.
-unknown law of.
-of Angiosperms.
-of colour.
-and death.
-Heer opposed to.
-of language.
-Lyell's views (see also Lyell).
-Turner on man and.
-Wal