migration and extinction, 122
causes of, 125
the essentials to the production of, 136
probable date of the, 160
and the climax of continental development, 206
date of last, 233
Glacial phenomena in North America, 116
Glaciation was greatest where rainfall is now greatest, 139
action of meteorological causes on, 142
summary of chief causes of, 144
in Northern Hemisphere, the only efficient cause of, 144
of New Zealand and South Africa, 162
local, due to high excentricity, 207
widespread in recent times, 536
Gleichenia in Greenland, 186
in relation to chalk, 89
Globigerina-ooze, analysis of, 91
Globigerinae, where found, 92
Glyptostrobus, fossil, 186
Goats, destructiveness of, in St. Helena, 295
Godman, Mr., on birds reaching the Azores, 248, 250
Gray, Professor Asa, on extinction of European plants by the glacial
epoch, 123
Great Britain and Japan, birds common to, 396
Greene, Dr. J. Reay, on chameleons in Bourbon and Mauritius, 435
Greenland, loss of sun-heat by clouds in, 147
an anomaly in the Northern Hemisphere, 154
Miocene flora of, 183
Cretaceous flora of, 186
flora of ice-surrounded rocks of, 522
Grinnell Land, fossil flora of, 184
Guernsey, peculiar caddis-fly in, 355
Gulick, Rev. J. T., on Achatinellinae, 318
Guenther, Dr., on gigantic tortoises, 279
on peculiar British fishes, 341
on _Urotrichus gibsii_, 394
on lizards in the London Docks, 431
on Indian toads in Mauritius, 438
Guppy, Mr., on chalk of Solomon Islands, 91

H.
Haast, Dr., on otter-like mammal in New Zealand, 475
Habitability of globe due to disproportion of land and water, 209
_Haplothorax burchellii_, 299
Hartlaub, Dr., on "Lemuria," 423, 426
_Hatteria punctata_, 483
Haughton, Professor, on heat carried by ocean-currents, 194
comparison of Miocene and existing climates, 197
on geological time, 211, 219
on thickness of sedimentary rocks, 219
Hawaiian fauna and flora, antiquity of, 328
Heat and cold, how dispersed or stored up, 131
Heat required to melt snow, 134
evolved by frozen water, its nature and effects, 145
cut off by cloud and fogs, 145
Hector, Dr., on Triassic and Jurassic flora of New Zealand, 526
Heer, Professor, on chalk sea in Central Europe, 93
Heilprin, Professor, on insects of Bermuda, 269
on land-shells of Bermuda, 270
_Helianthemum