INDEX. 



757 



Poison in insects, 125, and note. 



Polar Sea, 646 ; Parry seeks for, 646 ; obstructions 



to his progress, 646 ; Morton's discovery of, 650. 

 Polarized light, employed by the microscopist, 9. 

 Pollen, 363 ; in different plants, engraving of, 362 ; 



animalcules of, engraving of, 362 ; its organiza- 

 tion, 363 ; its action, 460, note. 

 Polyphemus, his retreat, 601. 

 Polypi, 54. 



Polypus, monstrous, met with by the Alecton, 39. 

 Pometou, coral island in archipelago of, 69. 

 Pontederia, spongiole of, engraving of, 349. 

 Popocatepetl in Mexico, 619 ; extent of crater, 619 ; 



interior of crater, engraving of, 619. 

 Poppy-Bee (Osmia papaveris), 197, note. 

 Post-Tertiary Period, 570 ; duration of, 570 ; animal 



forms in, 570 ; deluges during, 574. 

 Potamogetons, fish-plants, 387, 569. 

 Potato, stamen of, engraving of, 361. 

 Potato Bug, its ravages in the United States, 331. 

 Pouchet, experiments on rotifers, 48, and note. 

 Primary Epoch, 541 ; features of, 541 ; rocks of, 



541. 

 Protectors of agriculture, 219 ; titmouse, blackcap, 



etc., 219 ; mole, 220 ; hedgehog, 223. 

 Proteus, figures of, 11 ; its varying form, 12 ; P. 



anguinus, 651 ; engraving of, 652. 

 Protozoa, 10. 

 Providence, wisdom of, revealed in the tiniest of 



organisms, 6. 



Pterodactyle, 559 ; strange aspect of, 559. 

 Pupae, revival of, after long torpor, 49. 

 Purple Sarracenia, cups of, filled with pure water, 



402 ; engraving of, 403 . 

 Pyralis of the vine, engraving of, 98 ; its ravages, 



99 ; cone (Tortrix Strobiliana), engraving of, 217. 

 Pyramids, built of nummulites, 37 ; great, of Egypt, 



and Sphinx, engraving of, 35. 



Quails, migrate to Malta, 309 ; taken in swarms, 



309. 

 Quaternary Period, 570 ; duration of, 570. 



Racodium cellare, found only in casks, 684. 



Radish, Wild, 530, note. 



Rafflesia Arnoldi, its immense size and weight, 451; 



worshipped by Javanese, 451 ; engraving of, 454. 

 Rain-Drops, impressions of, preserved in stone, 585, 



and note ; engraving of, 586. 

 Ranunculus aquadlis, engraving of leaves of, 356 ; 



means of fertilization, 471. 

 Raphanus raphanistrum, 531, note. 

 Rat-Tailed Maggot, 116 ; lives in stagnant water, 



but has no swimming apparatus, 117 ; engraving 



of, 119. 

 Ravagers of the forest, 208 ; chiefly insects, 208 ; 



their variety, numbers, and power, 209, 210. 

 Ray on great size of oak-tree, 495. 



Red Sea, seen tinged of blood-red color by Ehren- 

 berg, 20 ; caused by the alga T. rubra, 20. 



Reduvius personalus, conceals itself under spider's 

 threads and dust, 143, 144 ; engraving of, 145. 



Reed- Warbler (Motacilla arundinacea), its mode of 

 building, 273 ; nest of, engraving of, 271. 



Regions incessantly rising, 596. 



Regnard on migration of squirrels, 302, note. 



Regulus omnicolor, party-colored wren, engraving 

 of nest of, 283 ; form of nest of, 286. 



Reproductive organs, 360. 



Reptiles, migration of, 320 ; showers of, 320, 321 ; 

 marine, of secondary epoch, 551. 



Respiration, of plants, 386 ; aquatic plants, 387 ; 

 engraving of, 389 ; Lavoisier on, 389 ; different 

 at night, 390 ; of animals injurious to composi- 

 tion of atmospheric air, 387. 



Respiratory canals, varied contents of, 688. 



Reticularia maxima, 521. 



Revivification of animalcules, Ehrenberg on, 51. 



Rhizophora gymnorrhiza, 479 ; forest of, engrav- 

 ing of, 477 ; curious habits of, 479. 



Rhubarb, Stalked, used as food, 426 ; roots of 

 Rheum palmatum yield a purgative, 426. 



Richmond in N. America built on Infusoria, 27. 



Rocks, divisions of, 540. 



Rock-Salt, red tint of, due to microscopic animals, 

 29. 



Rocky Mountains, Grand Geyser in, engraving of, 

 633 ; description of, 634, note. 



Root, the, organically identical with the boughs, 

 347 ; in Fuci, 348 ; in water-lentil, 349 ; creeps on 

 surface, 347 ; sends rootlets downward and leaves 

 upward, 347 ; Duhamel's experiment on, 348 ; 

 when above ground becomes branches and bears 

 leaves, 347 ; adventitious, 348 ; their functions, 

 348 ; performed under the earth, 349 ; supplied 

 with capillary spongioles, 349 ; engraving of spon- 

 giole, 349; adventitious, of banyan-tree, 369; 

 seeks water, 367 ; emits a variety of matters, 427; 

 observations of Duhamel and Macaire, 427 ; effect 

 of light upon, 481 ; engraving of, 483. 



Rose, petals of, steeped in precious essences, 411. 



Rosemary, 411. 



Roses, Otto of, 455, and note. 



Rotif era, engraving of, 44 ; description of, 47 ; pre- 

 tended revival of dead, 47 ; their revival denied, 

 48 ; Pouchet's experiments on, 48, and note ; great 

 vitality of, 49, 50 ; their power of resisting heat 

 and cold, 51, 52, and note. 



Ruysch on transpiration, 396. 



s. 



Saccharum officinarum, 412. 



Sagas, information derived from, 595. 



Sagus vinifera, wine-bearing sago-palm, yields a 

 vinous sap, 382 ; mode of collecting it, 383. 



Salangane, or esculent swallow, inhabits China, 

 etc., form of its nest, where built, and what com- 

 posed of, 282, 285 ; engraving of nest of, 282 ; 

 mode of gathering the nests, used as food, 285 ; 

 their value, 286, note. 



