Part 40

Shore, 198, 202, 203.

Shrews, 139.

Shrilling, 19, 53.

Sierra Nevada, 185, 189.

Silence, 187, 191.

Silver fir, 185, 186.

Silver-rod, 113.

Simplicity, 188.

Sky, 165, 171, 191, 194, 198, 199.

Skunk, 149, 155.

Skunk-cabbage, 11, 122.

Slave-making ant, 112.

Slavery, 106.

Slaves, 104, 108-112.

Smilax, 12, 30, 113, 117.

Snakes, 143, 155.

Snipe, 22.

Snow, 70, 140, 141, 147, 152-156, 160, 161, 166, 181.

Snowbird, 27, 66, 190.

Snow-buntings, 22, 24.

Snowflakes, 8, 22, 133, 153, 165.

Snow-storm, 153.

Socialism, 96.

Social wasp, 86, 89.

Solitary wasps, 89.

Solitude, 177, 188.

Solomon's-seal, 62.

Song, 18-20, 31, 32, 41-43, 45-51, 53, 55, 67, 119, 138, 161, 163, 168-170, 178, 190, 198.