V.
Variation in animals, [57]
amount of, in N. American birds, [58]
Vegetation, local peculiarities of, [185]
effects of Polar night on, [198]
Vesperugo serotinus, range of, [14]
Vireo bellii, supposed discontinuity of, [68]
Vireonidæ, an American family, [49]
W.
Wallich, Dr., on habitat of globigerinæ, [92]