Achatinellinæ, average range of, [317]
Ægialitis sanctæ-helenæ, [305]
Africa, characteristic mammalia of, [416]
former isolation of, [418]
Africa and Madagascar, relations of, [418]
early history of, [419]
African highlands as aiding the migration of plants, [524]
African reptiles absent from Madagascar, [418]
Aggressive power of the Scandinavian flora, [511]
Air and water, properties of, in relation to climate, [131]