s of Glen Roy.
-on glacier moraines.
-on rock-cavities formed by glacier-cascades.
-on Darwin's theory.
-on Geology of the Amazons.
-doubts recent upheaval of Patagonia.
-mentioned.

Age of the world.

Aggressive plants, introduction of.

Agricultural Society, experiments on potatoes.

Airy, H. letter to.

Albemarle Island, Darwin's collection of plants from.
-volcanoes of.

Aldrovanda.

Alerse ("Alerce"), occurrence in Chiloe.

Algae, movement of male-cells to female organ.

Alisma, F. Muller's observations on.
-submerged flowers of.

Alisma macrophylla, circumnutation of.

Allbutt, Prof. Clifford, on sperm-cells.

Allen, Grant, review by Romanes of his "Physiological Aesthetics."

Allen, J.A., on colours of birds.
-on mammals and birds of Florida.

Allogamy, use of term.

Almond, seedling peaches resembling.

Alopecurus pratensis, fertilisation of.

Alpine floras, Arctic and.
-of Azores, Canaries and Madeira.
-absence of, in southern islands.
-Ball on origin of flora.
-Darwin's work on.
-of United States.
-existence prior to Glacial period.
-Ice-action in New Zealand, and.
-Ball on origin of.

Alpine insects.

Alpine plants.
-change due to transplanting.
-slight change in isolated forms.
-as evidence of continental land at close of Glacial period.

Alps, Australian.
-Murchison on structure of.
-submergence.
-Tyndall's book on.

Alternate generations, in Hydrozoa.

Amazonia, Insects of.

Amazons, L. Agassiz on glacial phenomena in valley of.
-L. Agassiz on geology of.
-Bates on lepidoptera of.
-sedimentation off mouth of.

Amber, extinct plants preserved in.

Amblyopsis, a blind cave-fish, effect of conditions on.

Ameghino, Prof., discovery of Neomylodon Listai.

America (North), are European birds blown to?
-Falconer on elephants.
-fauna and flora of Japan and.
-flora of.
-mammalian fauna.
-introduction of European weeds.
-subsidence during Glacial period.
-western European plants and flora of.
-contrast during Tertiary period between South and.
-former greater distinction between fauna of South and.
-glaciation of South and.
-Rogers on coal-fields.

America (South), Bollaert's "Antiquities" of.
-Araucarian fossil wood from.
-Carabi of.
-elevation of coast.
-fauna of.
-floras of Australia and.
-geology of.
-Darwin's "Geological Observations" on.
-deposition of sediment on coast.
-