Maple, 19, 20, 26, 45, 59, 66, 101, 117, 120, 124-126, 134, 135, 157, 186. Maple-leaved viburnum, 124. Marble, 134. Marriage flight, 98. Marshes, 122. Marsh-marigold, 20. Martin, 22. Maryland yellow-throat, 37. Massachusetts, 21. Mastodon, 121. Meadow-ants, 102. Meadow-lark, 1. Meadow-mouse, 150. Meadows, 43, 56, 67, 168, 182. Meadow sweet, 80. Medeola, 62. Mertensia, 183. _Mesa_, 177. Mica, 134. Mice, 139. Milking, 101. Milkweeds, 72. Mink, 139, 140, 142, 149, 151. Minstrelsy, 48. Mint, 1. Mirage, 198. Mist, 75, 76, 170, 180, 183. Mitchella, 126. Miterworts, 21, 32. Mitla, 179. Mixed flocks, 8. Mniums, 117. Mocking-bird, 49. Mole, 150. Mollusks, 23. Monkey, 121. Moon, 129, 201, 202. Moosewood, 157. Moraine, 59, 130, 181. Morning-star, 193. Mosses, 12, 57, 68, 82, 116, 117, 134. Mother ants, 98. Moths, 93, 190. Mountain-ash, 66. Mountain-goat, 100. Mountain-holly, 113. Mountain-maple, 66. Mountains, 56-58, 65, 66, 68, 119, 164, 173-177, 179, 181, 183, 184, 190, 201, 202. Mountain stream, 169, 177, 178. Mountain thoughts, 178. Mouse, 35, 119. Mud-dauber, 84. Mullein, 63, 74. Mushrooms, 114-116, 204. Muskrats, 150-152. Myrtle warbler, 66. Natural history, 97. Nebulæ, 201. Negroes, 104, 105, 107, 111. Nest, 26-29, 31-34, 36-38, 41, 45, 66, 84, 95, 96, 102, 104-111, 190. New England, 6, 11, 127, 130, 169. New Jersey, 21. New York, 130. Night, 190, 200. Non-conformity, 179. North, 127. November, 152. Nuthatch, 40, 159. Nuts, 142. Nymph, 126, 157, 159, 192. Oaks, 5, 7, 8, 58, 89, 120, 126, 154, 157, 159, 186. Ocean, 183, 197, 199-201, 205, 207. October, 114, 123, 166. Oil-skins, 206. Olympus, 176. Opal, 199. Open, the, 153, 166. Orache, 77. Orchards, 30, 34, 71. Orchis, 168. Oregon snowbird, 190. Orinoco, 25. Oriole, 5, 25, 30, 117. Ornithologist, 118. Orphean strain, 119. Orpheus, 178. Osmunda, 13, 123, 124. Outlaws, 148. Ouzel, 178. Owl, 27, 31, 34, 35, 148, 192. Paint-brush, 181. Painted trillium, 62. Paleozoic reptiles, 131. Panther, 201. Pappus, 38, 75. Papyrus, 180. Parasite, 157. Parmelia, 57, 133, 159. Parnassus, 119. Partridgeberries, 160. Parula warbler, 8. Pastoral stage, 102. Pasture, 15, 22, 25, 56-58, 64, 72-74, 76, 88, 113, 127, 128, 135, 155. Pasture mushroom, 115. Pasture stones, 57, 94, 118, 127, 128, 131, 132, 134. Patagonia, 23. Peak, 174, 185. Peat-moss, 117. Pebbles, 132. Pedata violets, 60. Persia, 154. Personality, 43. Petal, 130, 167. Pewees, 26, 46, 50, 118, 119. Pheasant, 42. Phoebe, 18, 31, 56, 119. Pickerel-frogs, 114. Pickerel-weed, 74. Pignut, 142. Pigweed, 69. Pileus, 114. Pine, 5, 7, 9, 17, 28, 30, 40, 65, 78, 123, 125, 142, 154, 158, 162-164, 166, 168, 181, 183, 185-187, 191. Pine-needles, 7, 126, 147, 153. Pine-siskins, 162. Pine-warbler, 40. Pinnæ, 159. Pipes of Pan, 48. Piping, 18. Pipsissewa, 80. Pistillate, 79. Pitcher-plant, 13. Pitch-pine, 28, 166. Planets, 132.