Part 20

Thrasher, 14

Thrush, 10, 20, 30, 31, 35 brown, 21, 28 wood, 11, 12, 17

Toad, 66, 129

Torpedo boat, 54, 99

Trout, 82, 84, 96, 122

Turtle, spotted, 83, 84, 85, 88

Ulysses, 64

Unio, 196, 199, 209, 210

Unio margaritifera, 195, 209, 14

Unionidæ, 207

Utricularia, 64

Venus’s fly-trap, 206

Viceroy butterfly, 161

Vireo, 119

Walden pond, 80

Warblers, 10, 14

Wasps, 161

Watercress, 82, 83, 86

Water shield, 136

Water-strider, 55

Watson, Doctor, 150

Whip-poor-will, 30, 31, 35

Wild rose, 4, 8, 52, 205

Willows, 92, 94, 98, 227, 229

Witch, 114, 125

Witch-caps, 115

Witch-hazel, 112, 113, 114, 115, 116, 117, 124, 125, 129

Woodbine, 4