INDEX 



611 



Xoctiluca, chemical stimulation of, 

 370 



electrical stimulation of, 427 



mechanical stimulation of, 388 



narcosis of, 376 

 Nuclear membrane, 91 

 Nuclear sap, 91 

 Nucleic acid, 108 

 Nuclein bases, 108, 109, 162, 163, 175, 



305, 482 

 Nucleins, 92, 108 



in secretion, 516 



localisation of, in cell, 116 

 Nucleo-albumins, 108 

 Nucleolus, 91 

 Nucleo-proteids, 108 

 Nucleus, 88 



achromatic substance of, 91 



and protoplasm, 296, 511 



and respiration, 519 



chromatic substance of, 91 



direct division of, 192 



discovery of, 27, 66 



form of, 88 



function of, 504, 511 



in Bacteria, 67 



indirect or mitotic division of, 193 



in fatigue, 465 



in growth, 514 



in Monera, 66 



in secretion, 515 



mechanics of division of, 531 



position of, in cell, 514 



resting-stage of, 193 



structure of, 92 



substance of, 90 



theory of dominance of, 504 

 Nutrient solution for plants, 138 

 Nutrition of animals and plants, 138, 

 274 



of Bacteria, 140 



of Fungi, 140, 274 



OHM'S law, 407 



Oil-drops, amoeboid processes of, 528, 



562 



Oil-foams, structure of, 86 

 Ontogeny, 178, 187, 204, 207, 314, 575 

 Opalina, 72, 188 



Optimum of vital conditions, 350 

 Orbitolites, conduction in, 363 



mechanical stimulation of, 386, 441 



necrobiosis of non-nucleated pieces of, 

 135 



protoplasmic streaming in, 239 



thigmotaxis of, 440 

 Organ, 59 

 Organisation of living substance, 93, 



119 



Organisms and inorganic bodies, 118 

 Organisms, form-changes in, 177 



genealogical tree of, 178, 316 



fa, locomotion of, 232 



mechanical stimulation of, 389 



phototaxis of, 449 

 Over- stimulation, 460, 471 

 Ovum, 190 



fertilisation of pieces of, 506 



maturation of, 196, 199, 202 



types of segmentation of, 195 

 Oxalic acid as decomposition-product of 



proteid, 110 

 Oxygen as excretion, 173 



as general vital condition, 141, 281 



discovery of, 11, 19, 281 



in atmosphere, 282 



ingestion of, 142, 174 



intramolecular, 483 



partial pressure of, 282 



results of removal of, 283 

 Oxytricha, thigmotaxis of, 442 



PALAEONTOLOGY, 312 



Palingeny, 207 



Paracelsus, 12 



Paralinin, 92 



Paramcecium, axial orientation of, 501 



chemotaxis of, 437 



conjugation of, 92, 200, 517 



galvanic stimulation of, 419 



galvanotaxis of, 455 



geotaxis of, 446 



mechanical stimulation of, 383 



multiplication of, 366 



polar excitation of, 419 



specific gravity of, 97 



thermotaxis of, 453 



thigmotaxis of, 443 s 



work of, 252 

 Paranuclein, 92 

 Parthenogenesis, 190, 204 

 Pathology, 320 



cellular, 25 

 Peas, production of heat in growth of, 



258 

 Pelomyxa, chemical stimulation of , 472 



fatigue of, 461 



nuclei of, 89 



photic stimulation of, 399 



polar excitation of, 418 

 Pepsin, 109, 151, 171 

 Peptone, 105, 152 



fate of, 160 



Peranema, electrical stimulation of, 

 423 



mechanical stimulation of, 383 

 Periplaneta, thigmotaxis of spermatozoa 



of, 442 



Perpetual motion, problem of, 38 

 Person, 59 

 Phagocytes, 143, 144, 148, 322, 430, 



432 

 Philosophy, Bacon's monistic, 14 



Descartes's, 14 



