SUBJECT-INDEX. 



657 



snakes, I, 473; fertility and devel 

 opment, I, 583, 598, 599; regenera 

 tion, I, 589; elongated form, II, 

 15; supernumerary vertebrae, II, 

 123, 564; bilateral symmetry, II, 

 203, 204; Cope on segmentation in 

 extinct, II, 225, 226; ajtivity and 

 muscular colour, II, 365; func 

 tional integration, II, 375; outer 

 tissue differentiation, II, 387; 

 Owen on skeleton, II, 560. 



Resistance of media to locomotion, 

 II, 15. 



Respiratory System: effect of light, 



I, 31; organic re-arrangement, I, 

 37; cutaneous, I, 209; air-cells of 

 lungs, I, 254; embryonic branchiae 

 of salamander, I, 457; differen 

 tiation, II, 310-1, 333-8; physio 

 logical integration, II, 374-5, 382; 

 vascular differentiation and inte 

 gration, II, 377. 



Retrograde metamorphoses, in ani 

 mals, II, 12. 



Retzius, G., superficial nerve-end 

 ings, I, 666. 



Reversed Selection, I, 611, 612. 



Rhabdospheres, calcareous armour 

 and dynamic element in life, I, 

 119. 



Rhizoids, foliar expansions, II, 50. 



Rhizopoda: structure, I, 173; undif- 

 ferentiated function, I, 200; a pri 

 mary aggregate, II, 86; symmetry, 



II, 186; tissue differentiated, II, 

 299, 385; motion of sarcode, II, 

 356; symbiosis, II, 400. 



Rhythm: astronomic and organic, I, 

 499, 557; law of equilibration, I, 

 520-1; in multiplication, II, 419. 



Richeraud, Baron A., definition of 

 life, I, 79. 



Riley, C. V., on telegony, I, 645; 

 Termites, I, 680, 681; pouch of 

 Honey-ants, I, 684. 



Rodentia: incursions, I, 399; Ameri 

 can types, I, 403; fertility and 

 development, I, 583, 599. 



Rivinus, plant classification, I, 377. 



Rokitansky, on false joints, I, 230. 



Romanes, G. J. : on &quot;cessation of 



selection,&quot; I, 560-2: isolation and 



species differentiation, I, 569; 



&quot; physiological selection,&quot; I, 569- 



88 



71; panmixia, I, 649, 667; influence 

 of a previous sire on progeny, I, 

 649. 



Rontgen rays, I, 121, II, 621. 



Roots: developed from leaflets, II, 

 34; physiological differentiation, 

 II, 253-5, 270; nutrition from 

 leaves, II, 274; size and function, 

 II, 276. 



Rotiferce: latent vitality of desic 

 cated, I, 117; trochopore, II, 108, 

 109; molluscan relationship, II, 

 115; fertility and size, II, 453, 459. 



Roux, W. : &quot;intra-selection,&quot; I, 676; 

 functional adaptation, II, 354. 



Rudimentary organs: the definition 

 of life and, I, 112, natural selec 

 tion and eyes of cave fauna, I, 

 309, 612-4, 647-9, 693; evolution 

 hypothesis, I, 472-5, 556; limbs of 

 whale, I, 668-9, 685, 693. 



Ruminants, alimentary canal de 

 velopment, II, 327-9. 



SALAMANDER, embryonic branchiae, 



I, 457. 

 Salmonidw, reproduction and growth, 



I, 291-3, II, 454. 



Salpidw: heterogenesis, I, 272, 277; 

 integration, I, 588, II, 97. 



Sap (see Vascular system). 



Sarcina: central aggregation, II, 24; 

 fertility, II, 440. 



Savage, Dr., on &quot; Heredity and 

 Neurosis,&quot; I, 313. 



Scenedesmus, individuation, II, 24. 



Scent: natural selection and keen 

 ness of, I, 610; floral fertilization, 



II, 268-9; animal protection, II, 

 434. 



Schelling, E. W. J. von, definition 



of life, I, 78, 178. 

 Schleiden, J. M., on individuality, 



I, 245; on liverworts, II, 50, 52; 



algal indefiniteness, II, 29G. 

 Science, complex revelations of, I, 



252, 369, 450. 

 Seyphomcdusce, stabilization, II, 



108. 

 Sea: changes and movements In, I, 



83; life in, lower than terrestrial, 



I, 104; distribution, I, 396, 517; 



change of media caused by, I, 



481; geologic influence, I, 502. 



