GLOSSARIAL INDEX. 



493 



67, 60; elements of, GO; forms of 

 tells of, 61; in the fiiscicular sj-stera, 

 102; of the flower, 170; of the fi-iiit, 

 176; of the leaf, IDS; of the petiole, 

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

 62; thin-walled, 62. 

 Parthenogenesis (7rap0eVo?, a virgin • 



yimTK, production), 416. 

 Path of water through tl.e plant, 259. 

 Peatj- soils, 2:JU. 

 Pectin bodies, 358. 

 Pcctose, 34, n., 358. 

 Pellicle-membrane, 227. 

 Perennials, storing of assimilated matter 



in, 373. 

 Periblem (wcpi^Ktijia, a covering), 105, 



118, 155. 

 Pericambium, 113. 

 Periclinal planes (irepi, around ; kAiVu, I 



incline), 382. 

 Periderm (irepi, around; Swa, skin) 



75. 

 Periodic movements of organs, 409. 

 Peripheral tissue of rootlets, 108. 

 Perisperm (ircpi, around; ajrep/ia, the 



seed), 437. 

 Peristome, 441, n. 

 Perosmic acid. See Osmic Acid. 

 Petiole {pctiolus, a little foot),x paren- 

 chyma of the, 160; sensitiveness of 

 •the, 419. 

 Pfeffer's experiments with artificial cells, 



226. 

 Phelloderni (.^eXWs, cork; Sepiio., skin), 



75, 148, n. 

 Phellogen (<l>e\K6s, cork; yemiia, I pro- 

 duce), 74, 148. 

 Phenol. See Carbolic Acid. 

 Phloem ((JiXoco's, inner bark), 104. 

 Phloroglucin (CnlloOs), use of, as a test 



for lignin, 14, 37. 

 Pliosphoi-us, occurrence of, in plant-ash, 



247; office of, in the plant, 253. 

 Phosphorescence, 370. 

 Phototonup, 423. 



Phycocyanine (0i)Ko?, sea-weed; Kvavo^, 

 . dark blue), 295. 

 Phycoijrythrine (i/iij/co?, sea-weed; ipv- 



9p6z, red), 295. 

 Phycopha'ine (<^C/eo?, se.i-weed; <^aid?, 



brown), 295. 

 Piiycoxanthine (<^u«oy, sea-weed ; ^av66g, 



yellow), 295. 

 Phyllocladia (<l>u\kow, leaf; KAaSos, 



a young branch), 280. 

 Phylloc>'anin (ilHiAAof, leaf; Kuaj-osjdark 

 bluc),"290. 



Phyllodia (^vAAaJSijs, like leaves), 280. 

 PIn'llopliore (if>iiAAoi', leaf ; (jiopcia, I bear) 

 132. ' 



Phyllo.'cantUin ("(nJAAor, leaf; frn'SoV, yel- 

 low), 290. 

 Pl]y^ical properties of soils, 239. 

 Picric acid (C„H3[N02]30H), 18. 

 Pililerous layer (pilus, hair; fero, I 



bear), 108. 

 Pinguicula, 345. 

 Pinnate venation in leaves (pinnatus, 



featliered), 157. 

 Pistils, changes of, in ripening, 176; 

 fibru-vascular hurdles in, 173; scn^i- 

 tiveness of, 424; structure of angio- 

 spermous, 427. 

 Pith, 124; solubility of, 34, re. 

 Planes of the cell-wall at the point of 



growth, 381. 

 Plasmolysis (n-Aao-na, what has been 



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

 Plasmolytic agents, 27, n., 390; effect of, 



upon protoplasm, 210. 

 Plastids (irAao-o-o), I form), 40, 287. 

 Pleon (irAtW, full), 212. 

 Plerom (jrAijpcofia, that which fills), J05, 



118. 

 Poisons, effects of, upon plants, 473. 

 Polarizing apparatus, 4. 

 Pollen (pollen, fine flour), amount of, 

 pi'oduced 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 angiosperms, 427; 

 of g}'mnosperms, 437; structure of, 

 428;"vi(ality of, 431. 

 Pollen-tube, emission of the, 430; time 



required for descent of the, 431. 

 P, Uinia, 427. 

 Pollinic chamber, 438. 

 Polyembiyony (iroAiis, many; ip-^pvov, 



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 (KC2H3O2), use of, as a 



mounting-medium, 21. 

 Potassic bichromate (IV2Cr207), 14, 

 Potassic chlorate (KCIO3), 14. 

 Potassic ferrocyanide (K,Fe[CN]G), use 

 of, in making precipitation-mem- 

 branes, 225. 

 Potassic nitrate (KNO3), 15, 390, n. 



