INDEX. 



A. 



Absorption, its nature, 372 ; by the radicles, 372 ; 

 a vital act, 372 ; selection in, 372, and note; by 

 the leaves, Mariotte's experiment, 375 ; engrav- 

 ing of, 375. 



Acacia, growth of roots in the direction of water, 

 368. 



Adanson, on emigration of swallows, 313 ; on age 

 of trees, 405, 514. 



Adansonia digitata, engraving of, 513. 



Adventitious roots, 348 ; engraving of, 348. 



Aerial or pulmonary, and aquatic or branchial, 

 leaves of aquatic ranunculus, engraving of, 355 ; 

 aerial roots of banyan-tree form stems, 370 ; of 

 Clusia rosea choke the plant, 371, and note. 



A'rica, Central, exuberance of game in, 295. 



Air, the, and its corpuscules, 677 ; vital principle 

 of, 677 ; oxygen in, 677 ; fables respecting its in- 

 habitants, 678 ; modern opinions respecting, 678 ; 

 disseminates seeds and germs, 678. 



Alcyone, great distance of, from the earth, 698. 



Aldrovanda, mode of fertilization, 473. 



Algae, great plain of, 58 ; impeded the vessels of 

 Columbus, 58 ; its extent, 59 ; explanation of, 59. 



Alysia Olivieri, destroys eggs of Chlorops lineaia, 

 99, note. 



Amaryllis, stamen of, engraving of, 361. 



Amazon ant, its warlike habits, 167 ; predatory 

 raids, 167 ; opposed by the workmen, 167 ; car- 

 ries off nymphs, 168 ; gives itself up to laziness, 

 168 ; is reduced under the yoke of its own slave, 

 168 ; who deports it at pleasure to a new abode, 

 168. 



Amber, 584 ; history of, 584, note. 



Ammonites, Antediluvian, great size, 39 ; fossil, en- 

 graving of, 40. 



Anabas (Perca scandens), organization of, has res- 

 ervoir of water near its branchiae, 334 ; engrav- 

 ing of water reservoir of, 334 ; climbs banks and 

 rocks, 334 ; engraving of, 334. 



Anagallis arvensis, mutability of its color, 453. 



Anemone patens, mutability of its color, 452. 



Anguillulae, 47 ; experiments on, 48, note ; engrav- 

 ing of, 44. 



Animalcules, Baron Gleichen's experiments, 10; 

 Buffon's and Lamarck's opinion of them, 11 ; Du- 

 jardin's theory, 11 ; strata formed of, in North 

 America, 20 ; in Luneburg, 20 ; under Berlin, 20 ; 

 form great deposits on surface of globe, 20 ; in 



the air, 23 ; at times intercept the light, 23 ; in 

 dust blown from Africa, 23; in the tartar on 

 teeth, 24 ; revivification of, 51. 



Animals, believed to be capable of resuscitation, 

 47-52 ; migrations of, 295 ; causes of, 295 ; civili- 

 zation, cause of, 296 ; fecundity fatal to weak 

 tribes of, 296 ; wild geese, wonderful arrange- 

 ment of, in traversing the air, 297 ; catching wild 

 geese, engraving of, 298 ; respiration of, injurious 

 to composition of atmospheric air, 387 ; means of 

 reparation, 388. 



Anobium, death-watch, feigns death to escape be- 

 ing caught, 141. 



Anoplotheria, 564, 566 ; remains found hi gypsum 

 quarries near Paris, 566. 



Antennae, various forms of, engraving of, 111. 



Anther, engraving of, 361; description of, 363; 

 mode of ejecting pollen, 363. 



Antherozoa, 3f 4, note. 



Anthia duodecimpunctata, engraving of, 223. 



Antiparos, Grotto of, illumination of, by the Mar- 

 quis of Nointel, 653. 



Ant-Lion (Myrmeleon formicarius), mode of catch- 

 ing its prey, 156 ; engraving of, and pit, 157 ; 

 ejects remains of prey and cleanses its pit, 159. 



Ants, talk by touch, 107; their numerous eyes, 

 107 ; fighting propensities of, 164 ; slave-making 

 instinct, 164 ; the red ant, or Amazon, a daring 

 slave-maker, 167 ; predatory raids of, 167 ; return 

 after a battle, engraving of, 165 ; Huber's obser- 

 vations, 169 ; observations of Holt, Ward, and 

 others, 169, note; all kinds do not easily adapt 

 themselves to slavery, 171 ; the small yellow ants 

 set the Amazon at defiance, 171 ; carry off aphi- 

 des, 171 ; which they milk of a sweet liquor, 171 ; 

 milking aphides, engraving of, 170 ; nest more or 

 less rich in proportion to the aphides it possesses, 

 172 ; some ants find a supply of saccharine mat- 

 ter in their own bodies, 172 ; description of bat- 

 tle of, by Huber, 173 ; White Termites, 175. 



Avhis lanigera, attacks apple-trees, 99. 



Apteryx (A. MantelM), engraving of, 231. 



Aquatic spider and its diving-bell, engraving of, 

 203. 



Arabian mountain-chain, formed of nummulites, 

 37. 



Aranea pullaria, chicken-spider, 164. 



Archaeopteryx, 561, note. 



Archegosaurus, first antediluvian reptile, 549. 



Architects of the sea, 57 ; of towns, 174, 



