46 



INDEX. 



Arctic regions, solitudes of, 645; researches in, 

 646 ; formed of a congeries of islands, 646. 



Ariel swallow, engraving of, 311. 



Aristolochia, large flowers of, 448 ; fecundated by 

 means of insects, 466; A. Clematitis, engraving 

 of, 465 ; experiment with, 466. 



Artemisia vulgaris, superstition respecting, 742. 



Artocarpus incisa, bread-fruit tree, engraving of 

 fruit of, 345. 



Arum, Edible, manner of transpiration, 397 ; en- 

 graving of, 397. 



Arum, experiment on, by Ruysch, 396. 



Arundo indica, germination of, engraving of, 479. 



Asclepiadaceae, fertilization due to insects, 467. 



Asclepias procera, power of sustaining drought, 

 668. 



Ascophori, 494. 



Aspergilli, 404. 



Astronomers, Ancient, possessed no instruments, 

 694. 



Atmosphere, Dumas on, 390, and note ; Liebig on, 

 391 ; pressure of, 712 ; loaded with flour of wheat, 

 686 ; with Infusoria, debris of insects, filaments 

 of cotton, silk, etc., 687 ; germs, where are they ? 

 685 ; substances found in the hollow bones of 

 birds, 687. 



Atropa Mandragora, engraving of, 434. 



Aurochs vanished from France, 296. 



Aurora, borea.lis or australis, 732 ; engraving of, 

 729. 



Auvergne, ancient craters in, 623. 



Avalanches, how formed, 642 ; season in which 

 they occur, 642 ; ravages occasioned by, 642. 



B. 



Balm, 411. 



Baltic, beach of, rising, 595. 



Baltimore Oriole, a skilful weaver, 290 ; nest of, 

 engraving of, 290. 



Bamboo, rapidity of growth, 407. 



Banyan-Tree, its aerial roots ultimately reach the 

 soil and take root there, 370 ; called the pagoda 

 fig-tree, 371 ; sometimes so large as to seem a 

 forest, 371 ; engraving of, 369. 



Baobab, great size, 496 ; ungraceful, 4% ; use made 

 of stem by negroes, 499 ; engraving of, 513. 



Bark, the, its layers, 349 ; inner, 351 ; rapid growth 

 of, 405. 



Barn-Owl, nest of, engraving of, 258. 



Bartholin on the odor of rosemary, 411. 



Basalt, formation of, 635 ; cliffs of, in Staffa, en- 

 graving of, 635. 



Bats, do not migrate, 301 ; Nycteris of Upper 

 Egypt, 301 ; engraving of, 302. 



Bee, Working, remarkable structure of its feet, 

 104 ; brush and pincers of, engraving of, 105 ; 

 under side of, engraving of, 105 ; intelligence dis- 

 played in ejecting enemies, 144 ; some invaders 

 it envelops in resinous matter, 145 ; displays 

 foresight, 146 ; remarkable instinct displayed in 

 making a queen, 147 ; carpenter, 195 ; its habits, 

 196 ; its little chambers for its young, engraving 

 of, 1%; English (Xylocopa violacea), 197, note; 

 jnason, 205. 



Beetle, Gigantic, Goliath, 85; luminous, of the 

 West Indies, 123 ; use made of, 123 ; engraving 

 of, 121 ; sacred Scarabaeus, 127 ; dung Scarabaeus, 

 mode of collecting dung in which to hatch its 

 young, 152 ; engraving of, 153. 



Berlin built on beds of animalcules, 20. 



Bernard Palissy, founder of positive geology, 587. 



Bilin, tripoli of, 27 ; Schleiden's calculation of the 

 number of animalcules in a cubic inch of, 27, 28 ; 

 extent of its schists, 28. 



Birds, architecture of, 226 ; of humming-birds, 226, 

 239 ; of swallows, 230 ; of king-fisher and mag- 

 pie, 230; eagles, goshawks, 239; their abodes, 

 246; migration of, 304; engraving of condor, 

 307 ; cranes, 305 ; engraving of, 306 ; mechanism 

 of, 305; swallow, 305; wonderful strength of 

 fran:e, 305 ; speed of flight, 306 ; ariel swallow, 

 engraving of, 311 ; sea-mews, Sir Hans Sloane 

 on flight of, 309 ; vultures, sense of smell, 309 ; 

 quails, migration of, understood, 309 ; Charles 

 Buxton on acclimatization of birds, 313, note/ 

 passenger pigeon, 314 ; speed of flight, 315 ; en- 

 graving of, 316 ; penguins, 315. 



Bird-Tree, engraving of 741. 



Blood, shower of, explained, 136; due to certain 

 diurnal Lepidoptera, 137. 



Bombardier (Brachmits), its ingenious means of 

 protecting itself from enemies, 142 ; B. crepitans 

 defending itself, engraving of, 143 ; description 

 of, 143, note. 



Bombax Ceiba, soft wood of, 518. 



Bombyx of the mulberry-tree, 132, note ; B. disperr, 

 pine silk-worm, mode of forming its nest, 148 ; 

 engraving of, 149 ; pine, ravager of forest, 213 ; 

 called pine-spinne. , 213 ; monk (B. monacfin), 

 213; pine-eating phalaena, 213; engraving of, 

 214. 



Bone caves, 658. 



Bonnet on revivification of animals, 45. 



Boscowitz on length of Convolvulus, 507. 



Bostrichus beetle, its size, 216 ; great wood-gnawer, 

 216 ; curved-tooth, 218. 



Bower-Bird, nuptial arbor of, engraving of, 267 ; 

 mode of building and decorating, 266. 



Bread-Fruit, used as bread in Otaheite, 345; its 

 cells crammed with fecula, 345 ; its great weight, 

 346 ; engraving of, 345. 



Bremser's hypothesis, 581, note. 



Brindisi, palm-tree of, 468. 



Brocken, spectres of, 602 ; engraving of, 603. 



Brugmans finds that the roots of one plant poison 

 those of another, 427. 



Bryum alpinum, 524, note. 



Buffaloes, migration of, 301 ; Chateaubriand on, 301. 



Buprestidae, their rich garments, 89 ; Buprestis im- 

 perialis, engraving of, 89. 



Burrowing-Owl, its subterranean habits, 288 ; bur- 

 row of, engraving of, 287 ; its companions under 

 ground, 288. 



Burying - Beetle (Xecrophorus sepultor\ inters 

 moles, etc., 183; engraving of, 183; deposits its 

 eggs in dead animals, 183 ; interring a small rat, 

 engraving of, 184. 



Butcher-Birds, assassins, 261, 



