INDEX 



685 



Relativity, principle of, 11 



Religion, 40 

 natural, 42 

 science and, 39 



Religious interpretation of Nature, 



difficulties, 573 



scientific description not con- 

 sistent with, 440 



Reproduction, 103 



"Republic of reflexes," 187 



Resemblance between realm of 

 organisms and domain of in- 

 organic, 62 



Rhythms, 268 



Rhythmic activities, 94 



Richet, Prof. Charles, 85 



Ritter, Prof VV E , 4, 31, 154, 170 



Rock record, 368 



Romanes, 60, 212 



Rook and mussel, 211 



Rouband, 339 



Rousseau, 554 



Roux, 80, 128, 150 



Rowland, Prof., 16 



Royal Fern, 267, 268 



Royce, 38 



Rubner, 112 



Ruffed grouse, 60 



Ruskin, 274, 282, 649 



Russell, Bertrand, 271, 377 

 G. S , 159, 160, 161, 431 



Sacculina, 582 



Sanderson, Sir J. B., 270, 283 



Sage, Le, 11 



Salp, heartbeat of, 126 



Schelling, 37, 261, 282 



Schiller, F. C., 282, 443 



Science, Arms of, 8 



Science and Life, 279 



Science and Philosophy of the Or- 

 ganism, 130 



Science and philosophy, relation 



between, 37 

 and religion, 39 



Scientific description not incon- 

 sistent with religious inter- 

 pretation, 649 



Scientific inquiry, motives of, 



Scientific order, growing recogni- 

 tion of a, 4 



Schuster and Shipley, 21 



Sea-anemone, 187 



behaviour of, 188, 189 



Sea-urchin, development of in ab- 

 normal conditions, 15 



Sea-urchin, a republic of reflexes, 

 187 



and starfish, 196 

 Secondary sex characters, 456 

 Selection a determinant of life, 612 



indiscriminate, 613 



lethal, 446 



mutual, 465 



and progressiveness, 466 



reproductive, 446 



sexual, 456 



social, 563 

 Selection theory, 472 



criticism of, 451 



subtlety of, 454 

 Self-development, 81 

 St-lf-disassimilation, 81 

 Self-expression, 101 

 Self-maintenance, 136 



of organs not perfect, 87 

 Self-multiplication, 81 

 Self-preservation, 81 

 Self-preservative devices, 87 

 Self-regulation, 136 

 Self-repair, 88, 89 

 Selons, 587 

 Semon, 483 

 Semper, 409 



Senescence and death, 589 

 Senescence and rejuvenescence, 391, 



422, 591, 592 

 Senility, 590, 593 

 Sense-experience, 40 

 Sensori-motor experiments, 195 

 Sensory factors in aesthetic delight, 



268 



Sequence of activitites, 199 

 Sequoia trees, 56, 631 

 Serpent, beauty of (Ruskin), 274 

 Sexual Diamorphism, 392, 461 

 Sexual selection, 456 

 Sex-differences in instinctive be- 

 haviour, 201 



Sexes, divergence of, 391 

 "Seven Riddles of the Universe," 



13 



Shaw, 495 



Shell-building (Foraminifera), 185 

 Sherrington, Prof., 238, 268, 523 

 Shipley, Dr. A., 21, 55 

 Silkworm disease, 604 

 Size and distance, 30, 31 

 Simplicity, false, 620 

 Simplifying, evolution as a process 



of analytic, 361 

 Slipper-animalcule, 54 



