760 



INDEX. 



Tremellsp, sudden appearance of, 518 ; Tremella 

 atro-virens, engraving of, 519. 



Trichina spiralis, a small worm, 25 ; the pig its 

 favorite abode, 25 ; fatal accidents caused by, in 

 Germany, 25, note ; figure of, 24 ; mode of mul- 

 tiplying, 25 ; female, figure of, 25. 



Trichodesmia rubra, figure of, 20. 



Tridacna, Gigantic, called the " holy-water pot," 

 39 ; how detached from rocks, 39 ; weight of, 39 ; 

 used in the Moluccas as a bathing-tub, engrav- 

 ing of, 38. 



Trilobites during Silurian period, 544, note. 



Tripolis, formed of Infusoria, discovered by Ehren- 

 berg, 26, 30 ; of Bilin, 27 ; red-colored sorts em- 

 ployed in liouse-paiuting, etc., 28. 



Troopial, its curious nest, 289 ; engraving of, 

 291. 



Tsetse, fly of Africa, its redoubtable character, 94 ; 

 kills cattle, but harmless to man, 95 ; paralyzes 

 agriculture and limits the explorations of man, 

 96 ; engraving of, 95. 



Tuberose, steeped in precious essences, 411. 



Turpentine-Tree, great age, 512 ; Josephus on, 

 512. 



Typhcena, Duponti, sparkling-tailed humming-bird, 

 engraving of, 317. 



Typographer-Beetle {Bostrichus), 218. 



u. 



Unsen, in Japan, Christians thrown into its crater, 

 622. 



Upas-Tree, its terrible effects, 425 ; fables respect- 

 ing, 425 ; refutation of, due to Leschenault, 425 ; 

 rapidity of the action of this poison, 426. 



Upheavals, 590. 



Upholsterers, 186 ; fine thread spun by spiders, 187; 

 Louis XIV. had a dress made of it, 188. 



Urtica crenulata, suffering produced by its sting, 

 422 ; U. urenlissima, virulent poison of, 422. 



Ulricularia. vulgaris, singular appearance of, and 

 phenomena of fertilization, 472 ; engraving of, 

 469 ; hydrostatic leaves of, engraving of, 473. 



Vallisneria spiralis, fertilization of, 471. 



Vampires, suck blood, 665 ; travellers attacked by, 

 engraving of, 666 ; V. spectrum, engraving of, 

 667. 



Vanessa polychloros, great tortoise shell butterfly, 

 136. 



Vanilla, does not fructify in France, 466, and note. 



Vapors of bastard dittany, combustion of, 415. 



Vegetable kingdom, extraordinary contrasts, 408 ; 

 giants of, 494 ; vegetable life governed by a vital 

 force, 436 ; vegetable longevity, 507. 



Venus' Fly-Trap, affected by insects, 444 ; engrav- 

 ing of, 444 ; alleged to be carnivorous, 445, note. 



Vespa nidulans, paper-making wasp, 206. 



Vesuvius, eruptions of, 624, 625. 



Vibriones found in intestines of man, 24. 



Victoria regia, where found, 357 ; its immense 

 leaves, 357 ; their structure, 357 ; support weight 

 of aquatic birds, 358 ; engraving of, 357 ; brill- 

 iant flower of, 451, 486. 



Vines, very great length, 504 ; Pliny on, 507. 



Virgin, threads of the, explanation of, 188, 189. 



Viverra Musanga, 529, note. 



Volcanic eruptions, submarine, 627, note. 



Volcano, Jorullo, 594 ; Etna, 600 ; Stromboli, 616 ; 

 Goenong Api, 616, note ; Orizaba, 618 ; Popoca- 

 tepetl, 457, 459; Massaya, 619; Unsen, 622; 

 eruptions of Etna, 624 ; Momotombo, 623 ; Coto- 

 paxi, 623 ; Vesuvius, 624 ; submarine, 627, note ; 

 Santorin, 627, note ; theories respecting, 629. 



Vulture, bearded, GypaSius barbatus, 236. 



Vultures, sense of smell, 309 ; Humboldt on, 309. 



Vultur gryphus, or condor, 305 ; engraviug of, 307. 



w. 



Wagner's Lieberkuhnia, figure of, 12. 



Wall Megachile, or mason-bee, its habits, 205. 



Wasp, Paper-Making ( Vespa nidulans), 206 ; en- 

 graving of, 206 ; nest of, engraving of, 207. 



Water, red-colored, how caused, 19. 



Water-Beetle, Hydrophilus piceus, 202. 



Water-Hen {Fulica chloropus), its elegant nest, 

 270. 



Water-Lentil, root in, 349. 



Water-Lily, yellow {Nymphcea lulea), 391 ; quantity 

 of oxygen exhaled by, 391. 



Wax-Palm, 413 ; great height, 503. 



Weavers, 289 ; various tissue they weave, 289. 



Weeping-Tree, vegetable, marvel of transpiration, 

 398 ; engraving of, 399. 



Weeping-Willow, 531, note. 



Weevils, their small size and rapid increase in 

 numbers, 332 ; their great ravages, 332, and note. 



Wellingtonia gigantea, 503 ; great size and height 

 of, 503 ; age of, 503 ; engraving of, 505. 



Welwitschia mirabilix, note, 452. 



Whale, the, its great weight, 13. 



White Lily, perianth of, engraving of, 360. 



Willow-Caterpillar, hooked feet and nail, engrav- 

 ing of, 135 ; -eating caterpillar, head and jaws of, 

 engraving of, 112 ; Cossus Ug?iiperda, engraving 

 of, 193. 



Wine-Bearing sago-palm, yields large quantities of 

 vinous sap, 382 ; engraving of, 383. 



Wismar harbor, mud in, largely composed of 

 Diatomacese, 21. 



Witch-Dances in the Harz, 606. 



Witches'-Brooms caused by flies, 100. 



Wood, the, how composed, 352 ; sections of palm- 

 tree, engraving of, 355, note. 



Wood-Borers, 72 ; bug, egg of, 118. 



Wood-Destroying insects, 213. 



World, The Invisible, 1. 



Wren, the, its family and house, 255 ; Troglodytes 

 Europa'us, nest of, engraving of, 256. 



Wren, Party-Colored (Regulus omnicolor), form of 

 its nest, 286 ; engraving of nests of, 283. 



