SUBJECT INDEX 



761 



Nitrate, 42. 



Non-cellular plant, see Coenoeytie plant. 



Nuclear division, 35, 57, 58. 



free, 60. 

 Nuclear fragmentation, 28. 

 Nuclear fusion, 29, 35. 

 Nuclear membrane, 20, 35, 57. 

 Nuclear reticulum, 26, 29, 35, 57, 58. 

 Nuclear sap, 20, 35. 

 Nuclear spindle, 57, 58. 60. 

 Nuclein, 20. 



Nucleolus, 20, 35, 57, 58. 

 Nucleo-proteid, 415. 

 Nucleus, 21, 22, 20 sqq., 30, 31. 32 sqq. 



administrative function of, 27. 



indirect division of, see Mitosis. 



in relation to chromatophores, 270, 271, 

 272. 



location of, 30, 31, 32, 33. 



mitotic division of, see Mitosis. 

 Nyctitropic movements, 500, 508, 509, 

 007, 013. 



Ocellus, 026, 627. 



Oil, ethereal, 432, 485, 514, 515, 521, 522, 



520. 540. 

 Oil (fatty), see Fat. 

 Oil in chromatophores, 208. 

 Oil-gland, 511 sqq. 

 Oil-passage, 521 sqq., 541. 

 Oil-vesicle, 527, 528. 

 Organ, elementary, 15. 



protoplasmic, 18. 

 Organism, elementary, 10, 17. 

 Osmotic pressure, 41. 

 Osteosclereide, 160. 



Palisade-cell, 39, 263, 264, 208, 270, 273 



sqq., 300, 301. 

 Palisade-stereide, 4, 160. 

 Palisade-tissue, 300. 



oblique, 291. 

 Palisade-unit, 279. 

 Parasitic plant, 252 sqq. 

 Parenchyma, conducting, 291 sqq., 308, 

 328, 347, 348, 350, 391, 653, 050 sqq. 



fundamental, 98. 



secondary, 087. 



spongy, 263, 275. 

 Passage-cell, 226, 232, 233, 234, 352, 370. 



371, 523. 

 Pectic compound, 40. 

 Pellicle, limiting, 45. 

 Perforation, scalariform, 308. 



simple, 308. 

 Periblem, 80, 87, 88, 91, 002. 

 Pericambium, see following. 

 Pericycle, 93. 350, 352, 353. 359, 370. 530, 



652, 688, 098, 700. 

 Periderm, 133 sqq., 11. 



superficial, 141. 

 Period of migration (of statoliths), 598,012. 

 Peristome, 551, 552. 

 Phelloderm, 135, 141. 

 Phellogen. 99, 134, 135. 140, 141, 443, 

 478, 484. 



Phelloid, 136. 

 Phlobaphene, 135. 

 Phloem, 347, 348. 



interxylary, 695. 



secondary, 653 sqq., 097. 

 Phloem-parenchyma, see Lcptome-paron- 



chyma. 

 Phloem-ray, 003, 054, 055, 057, 658. 

 Phosphate, 42. 

 Photosynthesis, 202, 432. 

 Photosynthetic capacity, specific, 276. 

 Photosynthetic filament, 297. 

 Phyllotaxis in relation to vascular struc- 

 ture, 375. 

 Physiological anatomy, defined, 1. 



history of, 12, 13. 

 Physode, 43. 

 Phytovitellin, 415. 



Pigments of chromatophores, 2(i(i sqq. 

 Piliferous layer, 101. 



Pit, 44, 304, 328, 425, 550. 552. 553, 562, 

 563, 035, 636, 042, 658 sqq. 



bordered, 45, 112, 309, 310, 311, 317, 

 319, 394, 661 sqq. 



dilated, 306. 



oblique, 154, 155, 550. 



marginal, 121, 579, 025, 626. 



ventilating, 480. 

 Pit-cavitv, 44. 

 Pith, 302. 



Plank-root, 677, 078. 

 Plasmatic membrane, 24 sqq., 59, 335. 



external, see Ectoplast. 



internal, see Vacuolar membrane. 

 Plasmodesm, see Protoplasmic connecting- 

 thread. 

 Plasome, 46. 



Plasticity of hereditary features. 69. 

 Plastic material, 42. 

 Plectenchyma, see Pseudo-parenchyma. 

 Plerome, 86, 87, 88, 90, 91, 93. 

 Pneumathode, 433, 442, 445 sqq. 

 Pneumatophore, 430, 442, 457. 

 Polar cap, 57, 58. 

 Polioplasm, 24, 030. 

 Pollen-grain, 43. 

 Pore-passage (of stoma), 44(i. 

 Pore -wall (of gland), 518, 520. 

 Potassium carbonate, 499. 



myronate, 529. 



sulphate, 529. 

 Presentation-time, 598, 012. 

 Primordial utricle, see Protoplasm, peri- 

 pheral layer of. 

 Principle, mechanical, 54, 05. 



of differential imbibition. 550. '>'> I . 



of division of labour, ~hy. 56, 65, 06, 70, 

 303. 



of economy of material. 05. 00. 



of efficiency. 00. 



of expeditious translocation, 2sn sqq., 

 300. 



of maximum exposure of surface 66, 

 217, 228, 270 sqq., 300, 433. 

 Procambial cylinder, 649. 

 Procambium,'75, 94. 95, 96. 200. 201. 541. 



