656 



INDEX 



' Nidicolous ' Coleoptera, 140 



' Niners,' 464 



Noctiluca, 130 



Nototrema, 121 



Nutrition, 394 



Nutritive chains, 62, 110 



Ogneff, 593 



Opisthocomus, 125 



Organism and environment, 6, 7 



Organisms and mechanisms, 472 



Origin of deep-sea fauna, 97 



Orton, 425 



Osborn, H. F., 517 



Oscillatoria, 111 



Osmotic growths, 482 



Oxner, 243-244 



Ox-warbles, 310 



Oyster, fertility of, 132 



Painted fish,' 293 



Palolo-worm, 71 ; swarming of, 

 133 



Parasitism, 300 



Parental care, 419 



Parental instincts, chain of, 430- 

 432 



Parthenogenesis, artificial, 383 



' Partial ' migrants, 167 



Past, the living, 606 



Paternal care, 69, 422 



Pathology, the optimism of, 589 



Pavlov, 242 



Pearls, 312 



Pearse, A. S., 148, 158, 324-325 



Peckham, Mr. and Mrs., 234, 235 



Pelagic algse, 73 ; fauna, 73 ; 

 insects, 76 ; larvae, 66 



Penelope spider, 141 



Peri-embryonic fluid, 528 



Periodicities, 401 



Periophthalmus, 118 



Peters, Dr. Karl, 417 



Phosphorescence, 86 



Photosynthesis, 394 



Physical conditions of shore area, 

 57 



Pieron, 330 



Pigeon, passenger, 366 



Pigment in animals, 535 ; sig- 

 nificance of, 536 



Pineal body, 609 



Pitcher plant, inter-relations of, 



283 



Plankton, 75 

 Plants and animals, relations 



between, 281 



Plasticity of life, 156, 511 

 Play of animals, 408 

 Plover, Pacific Golden, 183, 184 

 Pocock, R. I., 34, 37 

 Polar body, 381 



Poulton, Prof. E. B., 33, 34, 539 

 Primal impulses, 5 

 Productivity, 129 ; in the open 



sea, 10 



Protective coloration of crab, 72 

 Protozoa, immortality of, 440 

 Przibram, Prof. H., 569 

 Putter, Prof., 79 

 Pycraft, W. P., 412, 463, 549 

 Python, meals of, 17 



Race, the individual and the, 432 



Racovitza, 123, 146 



Rat, fertility of, 131 



Reaction, changes of, 194-195 



Read, Prof. Carveth, 249 



Red snow, 135 



' Reducing division,' 380 



Reflex actions, 188 



Regeneration, 571 



Regeneration and embryonic 

 development, 569 



Regeneration, imperfect, 567 



Regeneration of lost parts, in- 

 stances of, 543, 552 



Regenerative capacity, unequal 

 distribution of, 558 



Registering experience, 591 



Relict seas, 112 



Reproducing, power of, 478 



Resemblance to surroundings, 28 



Response, effectiveness of, 510 



Revivification of water-fleas, 107 



Rhinoderma, 121 



Rhythmic movements, 196 



Richet, 503 



Ritter, W. E., 139 



Ritzema-Bos, Dr., 519 



Robinson, Louis, 226 



Rock-borers, 145 



Romanes, 241, 253, 255 



Ross, Sir John, 81 



