Hoosac River, source of, 6, 7, 18, 98, 188; South Branch of, 13; narrow pass of, 96; view of the, 120; North Branch of, 224; peaceful waters of, 238. _See_ Ashuilticook River _and_ Mayunsook River Hoosac Tunnel, completion of (1875), 7; western gate of, 12; cliffs of, 13; passing of trains through, 13, 224; eastern portal of, 222 Hoosac Valley, 6, 8, 115, 118, 185, 202, 213, 233; narrowest portion of, likened to the Pass of Thermopylæ of Greece, 96; wars of the, 96; morning mist of, 97; view of, from the Domelet, 120; roads of, 139; Revolutionary days in, 200; region of, described by Henry Ward Beecher, 201 Hopkins, Professor Albert, first nature-student afield (1833), 11; erected first astronomical observatory in U. S. (1838), 228 Hopper, The, a portion of Greylock Mountain, 11 Hornbeam, American, 149 _Houstonia cærulea_, 126 Howling Swamp, 204; wilderness of, 203 Huckleberry, 5, 186; dwarf, 117; venders of, 117; high, 118, 202 Hudson Brook, North Adams (Mass.), 224, 229; origin of name of, 225; Hawthorne’s description of, 225, 227 Hudson River, 7; valley of, 221, 204 I Iasione, 195 Ice Age, 9, 57, 115 _Illustrated Flora of Northeastern North America_, 128 Indian Corn, 88, 168 Indian Cucumber, 20, 162, 163 Indian Fig, 158 Indian Pipe, 164, 233 Indian Poke, 5, 20, 47, 68, 142, 164 Indian Turnip, 21, 160, 172 Indian’s Paint-Brush, 235 Indians, 7, 47, 97; Algonquin, 59 Innocence, 126 _Ipecacuanha, American_, 47 Iris, 143, 176 Iris Swamp, 142, 198 Iron-Wood trees, 149, 150 Itch-Weed, 5, 63 Ivy, Poison, 18, 35, 131 J Jack-in-the-Pulpit, 21, 157, 160, 162; origin of name of, 160 Jays, Blue, 149, 150, 154, 181; birdlings, 154 Jepson Farm, 211 Jerome Avenue (N. Y. City), 161 Jersey cows, 87 “Joe,” little boy, a character of Hawthorne’s, 215 Joe Larabee path, over the Domelet, 207 John-Fallow, pastures of the, 99, 138 Judge’s Cave, or granite boulder, summit of West Rock, New Haven (Conn.), 130 _Juglans cinerea_, 74 July, month of, 98, 109, 140; excursions: 5th, 188; 7th, 90; 8th, 111; 5th-19th, 196; 17th, 115; 18th, 198; 19th, 201; 22d, 212 June, month of, 134, 142, 165; excursions: 5th, 141; 6th, 57, 167; 8th, 55, 79, 82; 9th, 187; 10th, 56, 147; 14th, 62, 75; 15th, 82, 179; 16th, 183; 18th, 185; 19th, 75; 20th, 68, 70, 82, 187; 21st, 72, 74, 186, 190; 25th, 57; 26th, 83, 145; 30th, 84 K _Kalmia_, 6, 173, 184, 218 Kimball Bogs, 27, 72, 142; farm, 28, 36 Kurtz, Dr. F., Arctic Expedition of, 60 L Labrador Tea, 6, 187 Ladd Brook, 15