Spring beauty. _See_ Claytonia. Springs, in Kentucky, 232. Spruce, 6; a grove on Slide Mountain, 41, 42, 43. Spruce, Norway, 285. Squirrel, flying (_Sciuropterus volans_), 116; habits of, 307. Squirrel, gray (_Sciurus carolinensis_, var. _leucotis_), five tame squirrels, 93-96, 177. Squirrel, red (_Sciurus hudsonicus_), 95, 145, 184; cautious habits of, 193, 194; not so provident as the chipmunk, 194; caught by cats and snakes, 194, 195, 256; a race with a dog, 198, 199; as a parachute, 306, 307. Squirrel corn (_Dicentra canadensis_), 5, 6. Starling, red-shouldered, _or_ red-winged blackbird (_Agelaius phœniceus_), notes of, 218. Stars, the, 215, 216. Steeple-bush, _or_ hardhack, 11. Strawberries, wild, 42, 43, 57. Streams, in Kentucky, 231. Sunflower, wild, 19. Swallow, bank (_Clivicola riparia_), eggs of, 65. Swallow, barn (_Chelidon erythrogaster_), 166, 260; nest and eggs of, 65, 69, 70, 260. Swallow, chimney, _or_ chimney swift (_Chætura pelagica_), flight of, 69; nest and eggs of, 65, 68, 69. Swallow, cliff (_Petrochelidon lunifrons_), eggs of, 65. Swallow, white-bellied _or_ tree (_Tachycineta bicolor_), eggs of, 65. Swallows, hibernating of, 251, 252. Swift, chimney. _See_ Swallow, chimney. Swift, European, eggs of, 65. Table Mountain, 43. Tanager, scarlet (_Piranga erythromelas_), eggs of, 64. Tanager, summer. _See_ Red-bird, summer. Terrapin, _or_ land turtle, 196. Thoreau, Henry David, a woman's view of, 107, 156, 204; his _Walden_, 208; his Journals, 208-210; as an observer, 208-210, 253; quotation from, 208, 209. Thrasher, brown (_Harporhynchus rufus_), an unfortunate pair, 185-187, 236; its song sung by a robin, 267; song of, 168, 306; nest and eggs of, 185-187. Thrush, Bicknell's (_Turdus aliciæ bicknelli_), 46, 45; visiting a garden, 300; song of, 46, 48, 49, 54, 300. Thrush, golden-crowned, _or_ golden-crowned accentor, _or_ oven-bird (_Seiurus aurocapillus_), 70, 71; song of, 71; nest and eggs of, 70, 71. Thrush, gray-cheeked (_Turdus aliciæ_), 14. Thrush, hermit (_Turdus aonalaschkæ pallasii_), 14; song of, 17, 46. Thrush, wood (_Turdus mustelinus_), struggles with a piece of paper, 125, 126; a domestic tragedy, 184, 185; song of, 184, 185; nest and eggs of, 125, 126, 184, 185. Thyme, wild, 30. Toad, 168; the young after a shower, 254. Toad-flax, 29. Torrey, John, 253. Tortoise, box, 309. Towhee. _See_ Chewink. Tree-frog, _or_ tree-toad, 254, 261. Trees, succession of forest, 91. Trillium, painted, 43. Trout, brook, 57, 58.