INDEX. 



479 



Regeneration (Is in inverse propor- 

 tion to differentiation), 336 



.Reptiles (Circulation of), 198 



Reptiles (Cutaneous respiration of), 

 229 



Eeptiles (Taste in), 409 



Respiration, vegetal, 94 



intestinal respiration of 



pondloach, 230 



Respiration, tegumentary, of the 

 inferior vertebrates, 231 



Respiration (Physiological province 

 of), 240 



Respiration, diurnal, 252 



Respiratory (Organs), in the animal 

 kingdom, 228 



Retina of the eye of vertebrates, 

 425 



Rhizopods (Circulation of the), 193 



Rigidity, cadaveric, 153, 356 



Rotifers (Nervous system of the), 363 



S. 



SALIVA (Formation of the), 267 

 Salivary digestion, 179 

 Salts excreted by the animal, 137 

 Sap (Formation and Circulation of 



the), 90 

 Sap, elaborated or descending, 102, 



107, 281, 470 

 Sarcode, 348, 350 

 Secretion and excretion in general, 



256 



Secretion, vegetal, 257 

 Secretion and excretion in particular, 



264 



Secretions (Diminish with age), 293 

 Segmentation (Cellular), 276 



of the animal ovulum, 



285 

 Segmentation of the histological 



elements, 288 

 Senses (Number of the), 404 



(Organs of the), 403 



Senses of taste and of smell, 409 



Sense of hearing, 415 



Senses, tactile, 415 



Senses of sight, 420 



Sensations, 439 



Sensibility in general, 402, 439 



Sepia (Eye of the), 422 

 Serine of the blood, 64 

 Serum of the blood, 61 

 Sexes (Production of), 312 

 Sleep of plants, 118 

 Smell (Sense of), 411 



(Nerves of the sense of), 412 



Spermatozoaries, 330 

 Spermatozoaries (Reviviscence of the), 



333 

 Spleen (Its action on the Pancreas), 



260 



Sporangium, 318 



Subjectivity of the exterior world, 1 

 Substances, anorganic and organic, 



11 

 Substances, inorganic, of vegetals, 



114 



Substances, organic of vegetals, 109 

 Substance, grey nervous, 377 

 Surculation, 276 

 Systems, colonial digestive, 159 

 System, nervous, in the zoological 



series, 361 

 System, sympathetic nervous, of 



insects, 368 

 System, smypathetic nervous of the 



vertebrates, 374 



T. 



TEMPERATURE, constitutional, of ani- 

 mals, 444, 446 



Temperature of plants, 119 



Ternary (Compounds), 12 



Texture of the organisms, 59 



Theory, cellular, 48 



Thoracic canal, 224 



Thought (Of), 430 



Tissues, anatomical, 39 



Tissue, animal cellular, 49 



Tissue, connective, 53 



Tonicity, 389 



Touch (Sense of), 406 



Tracheae, 231 



Transformation of sugars into fats by 

 animals, 131 



Transformation of the forces in 

 Biology, 457 



Tubes, thin nervous, 382 



Tubercles, quadrigeininous, 371 



