GLOSSARIAL INDEX. 



493 



57, 60; elements of, GO; forms of 

 cells 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 (irapOevos, a virgin ; 



yeVeo-i?, 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 (Trept/SArj/xa, a covering), 105, 



118, 155. 



Pericambium, 113. 

 Periclinal planes (n-ept, around ; AcAiW>, I 



incline), 382. 

 Periderm (nepi, around; 5e'p/u.a, skin), 



75. 



Periodic movements of organs, 409. 

 Peripheral tissue of rootlets, 108. 

 Perisperm (TPI, around; <nrep^a, the 



seed), 437. 

 Peristome, 441, n. 

 Perosmic acid. See Osmic Acid. 

 Petiole (petiolus, a little foot), paren- 

 chyma of the, 160; sensitiveness of 

 the, 419. 

 Pfeffer's experiments with artificial cells. 



226. 

 Phelloderm ($eAAo?, cork; Se'p/oia, skin), 



75, 148, n. 



Pliellogen ($eAAo?, cork; yevvdu, I pro- 

 duce), 74, 148. 

 Phenol. See Carbolic Acid. 

 Phloem ($Aoi6?, inner bark), 104. 

 Phloroglucin (Cr,H 3 ), use of, as a test 



for lignin, 14, 37. 

 Phosphorus, occurrence of, in plant-ash, 



247; office of, in the plant, 253. 

 Phosphorescence, 370. 

 Phototonus, 423. 

 Phycocvanine ($0*09, sea-weed ; Kvavo<;, 



dark blue), 295. 

 Phycoerythrine (^{5/co?, sea-weed; epv- 



0pd?, red), 295. 

 Phycopha'ine ($v/co;, sea-weed; <eud?, 



brown), 295. 

 Phycoxanthine ($VKO?, sea-weed ; i-avOos, 



yellow), 295. 

 Phyllocladia (0v'AAov, leaf; *cAa8o?, 



a young branch), 280. 

 Phyllocyanin (4>vb\ov, leaf; KVOLVOS, dark 

 blue),* 290. 



Phyllodia (0uAAu>6jj?, like leaves), 280. 

 Phyllophore (<t>v\\ov, leaf ; </>opew, I bear), 



132. 



Phylloxanthin (0uAAoi^, leaf; ar06s, yel- 

 low), 290. 



Physical properties of soils, 239. 

 Picric acid (C 6 H 3 [N0 2 ] 3 OH), 18. 

 Piliferous layer (j)ilus, 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 angio- 

 s pennons, 427. 



Pith, 124; solubility of, 34, n. 

 Planes of the cell-wall at the point of 



growth, 381. 

 Plasmolysis (n-Aao-jua, what has been 



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

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



upon protoplasm, 210. 

 Plastids (jrAao-o-w, I form), 40, 287. 

 Pleon (irAeW, full), 21-2. 

 Plerom (n-Ajjpw/u.a, that which fills), 105, 



118. 



Poisons, effects of, upon plants, 473. 

 Polarizing apparatus, 4. 

 Pollen (pollen, tine 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 angiosperms, 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 (n-oAv?, many; f^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 (KC 2 H 3 2 ), use of, as a 



mounting-medium, 21. 

 Potassic bichromate (K,Cr 2 07), 14. 

 Potassic chlorate (KC10 3 ), 14. 

 Potassic ferrocyanide (K 4 Fe[CN] 6 ), use 

 of, in making precipitation-mem- 

 branes, 225. 

 Potassic nitrate (KX0 3 ), 15, 390, n. 



