SUBJECT-IJ.DEX. 



597 



r>ndall, Prof. J., on heat absorption by 



n-at-T vapour, 1, 7. 

 " Types, persistent," Huxley on, I, 



UYciB, dermal structure, , 289. 



Viva : cell multiplication, #, 18 ; outer 

 tissue, #, 239. 



Umbellifera : floral symmetry, 2, 156 ; 

 axial and foliar organs, 2, 511-6. 



Units: differentiation and dissimilarity, 

 1, 21 ; segregation and organic repair, 

 1, 177-9, 179-82 ; chemical, morpho- 

 logical, and physiological, 1, 182-3 ; 

 stability, 1, 275 ; instability and hete- 

 rogeneity of organic, 1, 287 ; morpho- 

 logical composition, 2, 5. 7-9, 13, 75, 

 77; phsenogamic, 2, 69-71, 136; 

 annulose, 2, 97; incident force and 

 homologous, 2, 144 ; morphological 

 summary, 2, 215. Physiological, (see 

 Physiological units). 



Unknowable, the, manifestations of, 1, 

 491. 



U asymmetrical, definition, 2, 116. 



TAN BEXEDEN, P. J., on icenia, 2, 95. 



Variation : St.ruthers on digital, 1, 258- 

 60 ; effects of parental condition, 1, 

 260-2 ; of altered function, 1, 262-4 

 270-2 ; " spontaneous," 1, 26 1-, 272, 

 425, 480 ; 2, 500 ; dissimilarity of 

 initial conditions, 1, 264-7, 2C7-8, 269- 

 70 ; persistence of force, 1, 271 ; phy- 

 siological units, resume, 1, 286-91; 

 equilibration and vegetal, 1, 437-9; 

 equilibration of favourable, 2, 387. 



Vascular system : nutrition, 1, 118, 

 120 ; development, 1, 140 ; function, 



1, 154-6 ; of mollusca, 1, 158 ; func- 

 tional differentiation and integration, 



2, 161-3 ; organic repair,./, 173, 177- 

 1) ; adaptability of, 1, 186 ; and in- 

 creased function, 1, 191, 193 ; heart 

 development, 1, 375, 377 ; equilibra- 

 tion, 1, 450 ; development of vegetal, 

 , 256-8, 262-8, 268-71, 381 ; diffe- 

 rentiation of, summary, 2, 271-4, 381 ; 

 effect of gravity, 2, 298; differentia- 

 tion of animal, 2, 327-34 ; mammalian 

 btood pressure, 2, 329 ; osseous deve- 

 lopment, 2, 338-42 ; muscularity, 2, 

 355; muscular colour, 2, 357-60; 

 repair and growth, 2, 361-4; heart- 



motor apparatus, 8, 3CR ; differentia- 

 tion and integration in animal, 2, 368- 

 72, 375 ; wood forviation, 2, 536-61; 

 resume of wood formation, 2, 561-6. 



Vegetal (see Botany and Morphology). 



Velocity, of moving bodies, 2, 202-4. 



I'erfebrata: size, 1, 111; size at birth 

 and maturity, 1, 116 ; axial structure 

 1, 136 ; embryonic development and 

 Von Baer's formula, 1, 142-4 ; self- 

 mobility, 1, 147 ; functional differen- 

 tiation, 1, 160 ; reparative power, 1, 

 175, 179 ; homogenesis universal, 1, 

 210 ; Huxley's definit : ou, 1, 3u7 ; 

 classification of higher, I, 308 ; distri- 

 bution in time, 1, 325 ; classificatoiy 

 value, 1, 361 ; embryonic mammalian 

 respiratory system, 1, 369 ; direct and 

 indirect development, 1, 372, 375 ; 

 evolution and vertebral column, 1, 

 382 ; rudimentary organs, 1, 385; evo- 

 kitiou and varied media, 1, 391-7 ; 

 size of head and vertebrse, 1, 424; 

 segregation and evolution of vertebrae, 



1, 427 ; adaptive segmentation, 2, 

 104-10, 111 , 208 ; bilateral symmetry, 



2, 186-9 ; internal organic symmetry, 

 2, 191 ; genesis of rudimentary axis, 

 2, 195-9 ; origin of notochord, 2, 39 J- 

 201; spinal segmentation, 2, 202-5, 

 208 ; skull development, 2, 205 ; 

 membranous, cartilaginous, and osseous 

 skeleton, 2, 207 ; resume, of axis 

 development, 2, 208 ; sensory organs, 

 2, 304 ; air chambers, 2, 322 ; osseous 

 differentiation, 2, 334-46; activity 

 and muscular colour, 2, 356-60 ; 

 heart-motor apparatus, 2, 366 ; cost 

 of genesis, 2, 416; agamogenesis 

 unknown, 2, 426 ; growth anJ genesis, 

 2, 433 ; heat expenditure and genesis, 

 2, 446-8, 453 ; Owen, theory of skele- 

 ton, 2, 517-35 ; evolution of vertebrae, 

 2, 532-5 ; origin of type, 2, 567-9. 



Viviparous: homogenesis, 1, 210, 218; 

 heterogenesis, 1, 214-5. 



Volcano, definition of life, 1, 67, 70. 



Volvocince : individuality, 1, 202 ; disin- 

 tegration of genesis, 1, 216 ; spherical 

 aggregation, 2. 16 ; symmetry, 2, 122 ; 

 outer Ussue, 2, 234, 379; fertility , 2, 

 421. 



Vomiting, alimentary canal development, 

 2, 315. 



Vorticeila: secondary aggregate, 2, 82 1 

 symmetry, 2 t 171. 



