970 



INDEX, 



Propagation by leaf-cuttings, ii. 41. 



— ty offshoots, ii. 790. 



— kinds of, ii. 6. 

 Protandrous dichogamy, ii. 309. 



— flower, ii. 307. 



— plants and hybridization, ii. 317. 

 Proteaceae, and animals, i. 432. 



— Australian, summer sleep, i, 326. 



— folhcle, ii. 430. 



— polleo-grains, ii. 99. 



— position of leaf-blades in many, i. 335. 



— storage of pollen, ii. 94. 



— sweeping hairs, ii. 615. 

 Proteales, ii, 751. 



— description, it. 750. 



Protea mellifera, Ausfcralia, protection of 

 stomafca from moisture, i. 296. 



cuticular ramparts, i. 310. 



stomata, surfsice view and section, i. 



297. 



Protection, from loss of heat, i. 528. 



— of bulbs, i. 624. 



— of chlorophyll, i. 391. 



— of cotyledons in germination, i. 613. 



— of embryo, ii. 442, 601. 



— of flowers, by sticky glands, ii. 236. 

 by tufts of hair, ii, 240. 



— of honey, by intra-floral hairs, ii. 239. 



various contrivances, ii. 233. 



various devices, ii. 241. 



— of leaves, against mechanical injury, i. 



428. 



— of plants, against animals, i. 430. 

 by snow, i. 548. 



by spines, &c., i. 433. 



— of x>ollen, ii. 117. 



— of pollen from wet, ii. 106, 109. 



— of ripening seeds against animals, ii. 444. 



— of seeds against wet, ii. 448. 



— of spermatoplasm aud ooplasm, ii, 72. 



— of sporangia, ii, 13. 



— of underground roots from vermin, &c., 



i. 762. 

 Protective contrivances, and distribution, 1. 

 450. 



and loss of heat, i. 529. 



of developing leaves, i. 348. 



— envelopes of young green leaves, i. 351. 



— isolation of plants by water, ii. 233. 



— poisons of plants, i. 431. 

 Proteid-granules, in endosperm, ii. 421. 

 Prothallium, female, of Hydropterides, ii. 



710. 



— of Equisetum, ii. 712. 



— of Fern, ii. 472. 



— of Lycopodium annotinum, ii. 716. 



— young, arising from spore, ii. 472. 

 Prothallm, Fern, habit of, i. 88. 

 Protococcoidese, as Lichen-algee, ii. 692. 



— description, ii. 628 et seq. 

 Frotococcus atlanticus, reddening of sea, i. 



389. 

 Protozoa afford examples of simplest type 

 of reproduction, ii. 630. 



— and Myxoraycetes, ii. 619. 

 Protogynous dichogamy, ii. 309. 



— flower, ii. 307. 



— plants and hybridization, ii. 316. 

 Protomycetes, ii. 674. 

 Protonema, of Moss, ii. 701, 799. 



— of Schistostega, PI, I, 

 luminosity, i, 385. 



Protoplasm, and freezing to death, i. 552. 



— continuity, and transmission of stimuli, 



i. 536. 



— essential part of cell, i. 26. 



— formative activity, i. 572. 



— importance in assimilation, i. 456. 



— in cell-wall, i. 581. 



— inclosed in cells, i. 25. ' 



— motion within cell-cavities, i. 32. 



— movements and chlorophyll-granules, U. 



382. 



— rate of current, i. 34. 



— resisting capacity, i. 553. 



— selective absorption due to Bpecific con- 



stitution, i. 73. 



Protoplasm, specific constitution, ii. 487. 

 structure, i. 511, 569. 



— theories of origin, ii. 597. 



— vehicle for oxygen, i. 495. 



— vitality, i. 51. 

 and cold, i. 544. 



Protoplasmic strands, conducting function, 



i. 466. 

 Protoplast, definition of term, i. 26. 



— division of labour within, i. 466. 

 Protoplasts, amcsboid, i. 31. 



— chlorophyll coii)uscles in, i, 30. 



— ciliated, general behaviour, i. 30. 



— green, behaviour towards light, i. 30. 



— mode of life, i. 27. 



— mutual and external relations, i. 47. 



— power of renovation, ii. 45. 



— problem of mutual intelligence between, 



i. 49. 



— sorts of, i. 28. 



Prunella, distribution of sexes, ii. 298. 



— honey protection, ii. 241. 



— hybrids, ii. 585. 

 Pruning, object of, ii. 37. 



Prunus, host of Polystigma rubrum, ii, 678. 



Prunus armeaiaca, section, i. 22. 



Prunus avium, dates of flowering, i. 519. 



drupe, ii. 428. 



PruQus cerasua, cotyledons, i. 608. 



Prunus communis, nectary, ii. 174. 



Prunus insititia, &c., galls of ExoascusPruni, 

 ii. 524. 



Prunus Mahaleb, reserve-buds, ii. 33. 



Prunus Padns, ii. 524. 



Prunus spinosa, drupe, ii. 428. 



spines, i. 443. 



Prussic acid, i. 462. 



Pseudo-hermaphrodite flowers and dichog- 

 amy, ii. 312. 



Pseudomorphs, Orobanche formerly con- 

 sidered, i. 185. 



Psilotacese, description, ii. 715. 



— homosporoua, ii. 713. 

 Ptarmigans, in Alps, i. 489. 



Ptelea trifoliata, flowers, sexual conditions, 

 ii. 296. 



seed-d,ispersal, ii. 853. 



Pteranthus echinatus, hooked fruit, ii. 873. 

 Pteridese, tribe of Polypodiaceae, ii. 706. 

 Pteridophyta compared to Bryophyta, ii.704. 



— general'idescription, ii. 704. 

 Pterocarya, mode of fertilization unknown, 



ii. 413. 

 Pterocarya Caucasica, cotyledons, i. 621. 

 Pterogonium gracile, parthenogenesis, ii. 



464. 

 Puccinia graminis, effect on Wheat crops, ii. 

 687. 



life-history, ii. 686. 



Puff-balls. See I/ycoperdon. 

 Pulmonaria, autogamy, ii. 396. 



— heterostyly, ii. 302. 



— protection of poUen, ii. 118. 



— venation, i. 630. 



Pulmonaria hybrida, characteristic hairs, ii. 



564. 

 Pulmonaria Lithospermum, flower colour 



and surroundings, ii. 194. 

 Pulmonaria ofiicinalis, winter protection, i, 



550. 

 Pulque, i. 507. 



— fermented juice of Agave Americana, i. 



272. 



Pulsatilla, hybrids, ii. 584. 



Pulsatilla patens, protogyny and hybridiza- 

 tion, ii. 316. 



Pulsatilla pratensis, colour of sepals, ii. 183. 



Pulsatilla vernalis, distribution of sexes, ii. 

 298. 



— nectaries, ii. 179. 



Pulvinua, of leaf, function, i. 532. 

 Purification, due to Bacteria, i. 264. 

 Purple Loosestrife. See Lyth/rum Salicaria. 

 Putrefaction, and Moulds, i. 607. 



— by Bacteria, ii. 623. 



— nature and causes of, substances gener- 



ated during, i. 263. 



Putrefaction, nature of, i. 506, 

 Pycnidia, of Lichens, ii. 693. 



of Pyrenomycetes, ii. 678. 



Pyrenoid, function, ii. 629. 



— of Chlainydomonas, ii. 629. 

 Pyrenoids, in Spirogyra, ii. 656. 



— of Hydrodictyon, ii. 640. 

 Pyrenohchenes, characters, ii. 694. 

 Pyrenomycetes, as Lichen-fungi, ii. 693. 



— distinctive characters, ii. 676. 

 Pyrola, dehiscence of pollen-sacs, ii. 92. 

 Pyrola chlorantha, capsules in dry and wet 



weather, ii. 448. 

 Pyrola media, autogamy, ii. 364. 

 Pyrola secunda, pollen - sprinkling, ii. 273, 



274. 

 Pyrola imiflora, flower and autogamy, ii. 

 383. 



scent, ii. 202. 



stamen, ii. 91. 



water-receptacles, i. 239. 



Pyrolacese, ii. 768. 

 Pyrus, carpels, ii. 76. 



— hybridization in, ii. 570. 



— scent, ii. 200. 



Pyrus aucuparia, and Gymnosporan^um 



juniperinum, ii. 686. 

 Pyrus communis, dates of flowering, i. 519, 



grafting on Crataegus Oxyacantha, &c., 



ii. 571. 

 Gymnosporangium gall, ii. 520. 

 persistent receptacle, il 435, 

 Pyrus cydonia, mucilaginous seed-coat, L 458. 

 Pyrus malus, carpels, ii, 76. 

 — host of Mistletoe, i. 205. 



ovary, sections, ii. 74. 



Pyrus salicifolia, erroneous assertions about 



origin, i. 215. 

 Pythium, germination, ii. 669. 

 Pythium de Baryanum, on seedlings, ii. 670. 



Q. 



Quamoclit coccinea, cotyledons, i. 621. 

 Quartz attacked by Lichens, i. 257, 



— difiB.cult to decompose, i. 83, 266. 

 Quawia amara, flowering branch, ii. 778. 

 Queen of the Night. See Cereus nycticalvs. 

 QuercuB, i, 716 ; ii. 760. 



— and bud-gaUs of Andricus inflator, ii. 543, 



of Aphilothrix gemmae, ii. 541. 



of Aphilothrix Sieholdi, U. 537, 541. 



of Cynips Hartigii, ii, 541. 



^ of Oynips lucida, ii. 541. 



of Cynips polycera, ii. 541. 



of Hryoterus terminalis, ii. 543. 



of Neuroterus fumipennis, ii. 537. 



of Neuroterus numismatus, ii. 537. 



of Spathegaster baccarum, ii. 526. 



— and grazing animals, i. 445. 



— and Peziza seruginosa, ii. 682. 



— and solid gall of Cynips Kollari, ii. 541. 



— bark, i. 720, 



— cotyledous, i. 608; ii. 421. 



— curvature of branches, i. 416. 



— defoliation slow, i. 361. 



— fertilization porogainio, ii, 413. 



— fossil, i. 636. 



— from chalk, ii. 613. 



— galls on roots, ii. 541. 



— germination, i. 609. 



— mechanical tissue arrangement, i. 729. 



— moncecious, ii. 297. 



— numerous hybrids, ii. 583. 



— nut-gall of Cynips calicis, ii. 543. 



— phyllotaxis, i. 399. 



— pollen-grains, ii. 99, 102. 



— pollination, ii. 133, 135. 



— protogynous, ii. 313. 



— scale-leaves of first bud, i. 624. 



— stomata, i. 280. 



~ tannin of wood and nutirition of Mildew, 

 i. 166. 



— variety in foliage, ii. 471. 



— vernation, i. 350. 



Quercus Austriaca, seedlings, i. 607. 



