Part 36

Sunrise in the equatorial zone, 22

Swifts, resemblances of to humming-birds, 152

Symmachia trochilus, 75 colubris, 75

Tahiti, preponderance of ferns in, 269

Temperature of London and Batavia compared, 6 of different latitudes, various causes of, 7

Temperature, influenced by heat of soil, 8 influenced by aqueous vapour of atmosphere, 9

Temperature of tropical and temperate zones, cause of, illustrated, 12

Tertiary faunas and their relations, 344, 347

Thaumastura cora, very pugnacious, 214

Timor and Scotland, climates compared, 14

Timor and Flores, white-marked birds of, 263

Toucans, 106

Tree-frogs, 116

Tristan d’Acunha, bright-coloured Pelargonium of, 275

Trochilidæ, 125

Trogons, 105

Tropical vegetation, concluding remarks on, 65 probable causes of its luxuriance and variety, 66 Mr. Belt on, 67

Tropical birds, dull-coloured, 110 coloration of, 110 green, 110

Tropics, limitation of, 3 aspects of animal life in, 121

Trunks, variety of, 31, 33 probable cause of flowering, 34

Twilight, short at equator, 21

Typical colours, 179

Vanda lowii, 51

Vampyre-bats, 119

Variation, how influenced, 142

Vegetation, equatorial, 27

Vipers, green, 114

Vitality a cause of bright colour, 193