Part 15

Amazon, 25.

Aments, 14.

Andromeda, 168.

Anemones, 1, 13, 20, 21, 59, 61, 67, 203.

Animals, 136-138, 142, 146, 187, 189, 191, 192.

Antennæ, 52, 101, 103.

Anthers, 78.

Ant hill, 94, 108.

Ants, 4, 88, 91, 94-107, 109, 111, 112, 145.

Aphid, 100, 101, 112.

Aphrodite, 207.

Apis, 78.

Apple, wild, 148.

April, 142, 169.

Arachne, 78.

Arbutus, 20, 60, 121.

Arctic, 131.

Arctic Circle, 23.

Armies, 102, 107, 111.

Ash, 66, 124.

Aspen, 7, 123.

Aspens, 181, 182.

Asters, 71, 122.

August, 113, 114, 117, 134.

Autumn, 20, 45, 51, 72, 92, 118, 119, 122, 125, 134, 135, 144, 152, 157, 166, 196.

Audubon hermit-thrush, 190.

Avalanches, 182.

Balsam, 3, 6, 57, 66, 68.