GLOSSABIAL INDEX. 



493 



57, 60 ; elements of, 60 ; forms of 



celj? of, 61; in the fascicular system, 



102; of the flower, 170; of the fruit, 



176; of the leaf, 158; of the petiole, 



160; of the stem, 119, 124; sclerotic, 



62; thin-walled, 62. 

 Parthenogenesis (*ap9ivtn, a virgin; 



yivwi, production), 446. 

 Path of water through the plant, 259. 

 Peaty soils, 239. 

 Pectin bodies, 358. 

 Pectose, 34, n., 358. 

 Pellicle-membrane, 227. 

 Perennials, storing of assimilated matter 



in, 373. 

 Periblem Uepi/JAiipa, a covering), 105, 



118, 155. 



Pericambium, 113. 

 Periclinal planes (irepi, around ; /cAiVw, I 



incline), 382. 

 Periderm (*tpi, around; *>Ma, skin), 



75. 



Periodic movements of organs, 409. 

 Peripheral tissue of rootlets, 108. 

 Perisperm (**&, around; <rwp/x, the 



seed), 437. 

 Peristome, 441, n. 

 Perosmic acid. See Osmic Acid. 

 Petiole (pttiolui, a little foot), paren- 

 chyma of the, 160; sensitiveness of 



the, 419. 

 Pfeffer's experiments with artificial cells, 



226. 

 Phelloderm (J>e\Ao ( cork; Sippa, skin), 



75, 148, n. 



Phellogen (<<AA<k, cork; ytwaa, I pro- 

 duce), 74, 148. 

 Phenol. See Carbolic Acid. 

 Phloem (4.AOKK, inner bark), 104. 

 Phloroglucin (CHO 3 ), use of, as a test 



for lignin, 14. 37. 

 Phosphorus, occurrence of, in plant-ash, 



247; office of, in the plant, 258. 

 Phosphorescence, 370. 

 Phototonus, 423. 

 Phycocyanine (*0o, sea-weed; *V<LV<K, 



dark blue), 295. 

 Phycoerythrine (4.0K, sea-weed; ipv- 



6p6s, red), 295. 

 Phycopha'ine (*v, sea-weed; *, 



brown), 295. 

 Phycoxanthine (*C*o, sea-weed ; fai-Ws, 



yellow), 295. 

 Phyllocladia fovAAoK, leaf; icXoio?, 



a young branch), 280. 

 Phyllocyanin (<frvAAoK, leaf; Kv<m>*,dark 



bine), 290. 



Phyllodia (^uAAui^s, like leaves), 280. 



Phyllophore (<t>v\\ ov , l ea f ; <t>op^, I bear), 

 132. 



Phylloxanthin (<i>v\\ov, leaf; fa0o S) yel- 

 low), 290. 



Physical properties of soils, 239. 



Picric acid (CH 3 [N0 2 ] 3 OH), 18. 



Piliferous layer (pilus, hair; fero, I 

 bear), 108. 



Pinguicula, 345. 



Pinnate venation in leaves (pinnatus, 

 feathered), 157. 



Pistils, changes of, in ripening, 176; 

 fibro-vascular bundles in, 173; sensi- 

 tiveness of, 424; structure of angic- 

 spermous, 427. 



Pith, 124; solubility of, 34, n. 



Planes of the cell-wall at the point of 

 growth, 381. 



Plasmolysis ()rAa<r/bia, what has been 

 formed : Avais, a loosing), 390, n. 



Plasmolytic agent*, 27, n., 390; effect of, 

 upon protoplasm, 210. 



Plastids (irAa<ro-u>, I form), 40, 287. 



Pleon (irMor, full), 212. 



Plerom (irA^pw^o, that which fills), 105, 

 118. 



Poisons, effects of, upon plants, 473. 



Polarizing apparatus, 4. 



Pollen (pollen, fine flour), amount of, 

 produced by flowers, 432; bursting of 

 grains of, in water, 429 ; contents of 

 grains of, 428; development of, 171, 

 379; effect of sugar solutions on 

 grains of, 429; of angios perms, 427; 

 of gymnosperms, 437; structure of, 

 428; "vitality of, 431. 



Pollen-tube, emission of the, 430; time 

 required for descent of the, 431. 



Pollinia, 427. 



Pollinic chamber, 438. 



Polyembryony (iroAw, many; 

 embryo), 446. 



Ponceau, 19. 



Poplar, glands on leaf of the, 161. 



Potash (KOH), diffusion of, 222; use of, 

 as a reagent, 6 ; use of, in examina- 

 tion of chloroplastids, 42; use of, in 

 section-cutting, 3, n. 



Potassic acetate (KC 2 H,0 2 ), use of, M a 

 mounting-medium, 21. 



Potassic bichromate (KjCrjOr), I*- 



Potassic chlorate (KC10 3 ), 14- 



Potassic ferrocvanide (K 4 Fe[CN] e ), use 

 of, in making precipitation-mem- 

 branes, 225. 



Potassic nitrate (KNO.,), 15, 390, n. 



