Chipmunk (_Tamias striatus_), 140; spring awakening of, 145, 163; breeding habits of, 146; manners and conversation of, 146; enemies of, 146, 147; nervous, impetuous ways of, 147, 148; a hermit, 148, 152; adventures with cats, 148-150; the digging and furnishing of the den, 150, 151; food for the winter, 115, 152, 194; sociability, 152; pursued by a weasel, 152-154. Chippie, _or_ social sparrow (_Spizella socialis_), 72; a curious mishap, 124, 125; and young cowbird, 315, 316; nest and eggs of, 64, 124. Claytonia, _or_ spring beauty, 42, 43. Clintonia, 42. Clover, red, 42. Clover, sweet, _or_ melilotus, 29. Columbine, 13. Condor, 309. Cone-flower, _or_ rudbeckia, 98. Contentment, 87-90. Coon. _See_ Raccoon. Corydalis, 13. Cowbird, _or_ cow-bunting (_Molothrus ater_), desecrating a vireo's nest, 290, 291; the young bird and its foster-parent, 315-316. Crane, sandhill (_Grus mexicana_), 105-107; nest and eggs of, 105, 106. Crickets, field, hibernating of, 255. Crow, American (_Corvus americanus_), their fellow-feeling and courtesy towards each other, 119, 120; suspiciousness of, 121, 122, 164, 171, 265, 298; the male feeding his mate, 312; notes of, 163; nest of, 312. Cuckoo, European, 316. Cypripedium. _See_ Lady's-slipper. Daffodil, 19. Dandelion, 104, 105. David, a guide in the Catskills, 39, 40. Deer, Virginia (_Cariacus virginianus_), 41, 277-279. Dicentra. _See_ Dutchman's breeches _and_ Squirrel corn. Dickcissel. _See_ Bunting, black-throated, 239. Dipper, European, eggs of, 65. Dog, a, detected in stealing, 58, 59; a red squirrel's race with a, 198, 199, 256. Dog-toes, 98. Double-Top, 43. Dove, turtle or mourning (_Zenaidura macroura_), 236, 299; nest and young of, 299, 300. Duck, eider, 70. Ducks, wild, 101, 161. Dutchman's breeches (_Dicentra cucullaria_), 4. Eel, 252. Emerson, Ralph Waldo, 109, 245; quotations from, 14, 63. Erythronium. _See_ Adder's-tongue. Evening primrose, 19. Esopus Creek, 34. Farmers, Kentucky, 226, 227. Fear, in wild animals, 193-197; in man, 195; in domestic animals, 195; paralysis from, 255-257. Fences, 100. Fern. _See_ Osmunda. Fertility, the beauty of, 221, 222. Finch, lark, _or_ lark sparrow (_Chondestes grammacus_), 234, 235; song of, 235. Finch, purple (_Carpodacus purpureus_), song of, 308; nest of, 300. Fir, balsam, 42, 43, 47. Fish, a small, swallowing a large fish, 131. Fishes, flying, walking, and tree-climbing, 308. Flicker. _See_ High-hole. Flowers, wild, the identification of, 31, 32.