Spiders, webs one hundred feet long; autumn best time for observation, 106; precocious baby spiders; building a bridge, 108; moored by guy threads, 110; ballooning, 112; at sea, 113. Sponge-ball, commonly known as Bedegnar, 43. Sprengel, 166, 202, 206. "Spume-bearer" (_Aphrophora_), 89; allied to bugs; his aerated bath; graduation from his surroundings, 87; his color and size; his alertness, 88; time of egg-laying and hatching; power of leaping, 89; no secret process of making suds; sun's evaporation necessitates continuous additions, 90. Squirrel, 153. Statue of Liberty, 108. Stems assuming the functions of roots, 187. Summer meadows, 83. Sweetbrier sponge, 40. Sweet-pea, 188. _Tachina_, a parasitic fly, 200. Tendrils, what they are; a stem or modified root, 187; reaching for conquest, 188; not a special or primal organ, 189; method of contraction, 191; the reverse twist, its function, 192; singular botanical prank, 194. _Thelaphora cærulea_, fox-fire, 22. Tiger-beetle, wonderful speed and agility of, 2. Toad-spit, 84. Toadstools, 19, 138. Trailing cobwebs, 113. True locust, the, 232. Tulip, blue, 45. Tumble-bug, his former eminence, 53; used for ornaments and decorative purposes; his proud lineage, 54; male and female inseparable; the two familiar species; its season, 55; curious antics; bug talk, 56; a question of selection, 58; indefatigable workers; manner of working, 59; Mrs. Tumble-bug's industry, 60; singular manner of burying the ball, 61; the chrysalis state, 62; young Mr. Tumble-bug begins life, 63. Twilight moth. See Moths. Union Square Fountain, 45. Vireo, strange materials in the nest of, 147, 164, 171, 172. Wasps, as cross-fertilizers, 30; manner of transferring pollen, 31, 91; "Digger," sand hornets, 242, 252. Weeds, artistically treated, 27; barn-yard weeds no longer commonplace, 28. Welcome odor of the woods, 131. Welcome of the flowers, 30, 223. White, Gilbert, quoted, 114-117. White, J., 161. White Mountains, 97. White-tailed black wasp, 94. Wiggler moth (_Gramatophora trisignata_), time of appearance of, 81. Wild-star cucumber, 189. Witch-hazel divining-rod, 214. Wolf-spiders, short-legged dodgers; crab-like manner of walking, 120. Wood-fairies at work; their magic wands, 36; mischief-makers, 37; results of their pranks, 38. Woolly-bear caterpillar. See Caterpillar. Woolly flock, 230; expert in bugs, 231; what constitutes a bug, 232, 235; first appearance in June; on alders; destruction of apple-trees; sucking-beaks, 233; wingless but covered with woolly down, 236.