592 



SUBJECT-IXDEX. 



2, 49S, 503 ; abnormal vegetal growth, 

 2, 512; organ of, {see Alimentarj 

 canal). 



Obesity, nutrition and genesi?, 2, 459- 

 62, 484. 



Odours : floral fertilization, ^, 252, 253 ; 

 animal protection, 2^ 414. 



Offspring, influence of age on, 2, 4S0. 



Oken, L. : arclietypal liTpoll'.esis, 2, 

 109 ; theory of supernumerary bones, 

 2, 20fi ; on the skull, 2, 530. 



Oprintia {see Cactacea). 



0/chids : pollen propulsion, i, 54; leaf 

 formation, 2^ 56 ; ae.ial roots and 

 physiological differentiation, 2, 233, 

 245 ; foliar surface, 2, 247. 



Orgirdc matter: properties of elements, 

 2, 3-5, 22 ; of binary compounds. 1, 

 5-10; of ternary, i, 10-12; quaternai-y 

 2i 12-14, 23 ; moiar and molecular 

 mobility, 1, 14 ; colloid and crystalloid 

 form, i, 35-8, 23; their diffusibility, 

 2, 18-2i, 24 ; e\treine complexity, i, 

 21; modifiability, 1, 25, 41 ; caiDillarity 

 and osmosis, 1, 26 ; effects of heat, 1, 

 27 ; of light, i, 28-33 ; nitrogenous, 

 1, 35-41 ; oxidation and evolution of 

 heat, /, 43, 57 ; genesis of electricity, 

 i, 47-9, 57 ; transformations and 

 persistence of force. 1, 57 ; sensible 

 motions in, 1, 57 ; inorganic matter, 

 1, 89-93 ; resume of generalizations, 



1, 94; instability, 1, 121, 420, 473; 

 and heterogeneity, i, 286-91 ; "spon- 

 taneous generation," and evolution of, 

 i, 479-84, 486 ; cell-doctrine and 

 evolution of, 2, 10-13. 



Organization {see Structure). 



Osmosis : organic effects, i, 26, 27 ; in 

 animals, 1, 55 ; 2, 361-4 ; in vascular 

 system, 2, 298, 327-34; in ve-etal 

 tissue, 2, 537, 544, 546, 554, 561-5. 



Ossification {see Bone), 



Owen, Sir E.: metagenesis and partheno- 

 genesis, 2, 213 ; fossil mammalia, 1, 

 326; human parasites, 1, 342; con- 

 tinuous operation of creative power, 1, 

 404 ; theory of vertebrate skeleton, 2, 

 110, 517-35 ; theory of supernumerary 

 bones, 2, 206 ; Eschricht on ascaris, 



2, 465. 



Oxalis : radial symmetry, 2, 137 ; foliar 



surface, 2, 248. 

 Oxen and sheep, growth of, 1, 128, 131. 



Oxidation (see Oxygen). 



Oxygen : chemical and physical proper* 

 ties, 1, 3-5, 20, 22 ; binary compouncis, 

 1, 5-7, 10, 22; ternary, 1, i0-i2; 

 quaternary, i, 12-14, 23 ; a crystal- 

 loid, 1, 21 ; combining power and 

 atomic weight, 1, 31 ; organic clnm^o 

 from, 1. 34; heat generation, i, 43-6; 

 phosphorescence, 1, 46 ; nerve forco 

 dependent on, 1, 50 ; necessary to 

 auiinal lii'e, 1, 75-6 j amount inhaled, 

 I, 170. 



P^^CrET, Sib J., blood changes, from 

 disease, 1, 177, 484. 



Palx'ontology : distribution in time, 2, 

 320-7, 32*8 ; special creation, i, 310 ; 

 record congruous with evolution, i, 

 397-401, 472. 



Pal.neUa : tissues, 2, 226 ; sexual genesis^ 

 2, 429. 



Parasites : aberrant type forms, 1, 296 ; 

 distribution, i, 313; special creation 

 and human, 2, 342, 354; retrograde 

 development, 1, 370 ; nutrition and 

 genesis in vegetal, 2, 463, 468 ; in 

 animal, 2, 464-6, 468. 



Parthenogenesis : true and pseudo-, 1, 

 213-5 ; laws of multiplicaiion, 2, 395 ; 

 of articulata, 2, 426. 



Peloria : in c/loxhiia, 2, 151; phoeno- 

 gams, 2, 163. 



Penguin, dermal structvire, 2, 300. 



Persistence of force: properties of com* 

 jDOunds, 1, 3 ; organic transformation, 

 1, 57; growth, 1, 122, 131, 132; 

 organic energy, 1, 176 ; organic repaii*, 

 1, 177; variation, 1, 271; genesiF, 

 heredity, and variation, 1, 291; moi- 

 phological summary, 2, 217 ; ve;^etal 

 tissue differential ion, 2, 227; physio- 

 loiiical development, 2, 337. 



Petals: foliar homology, 2, 33-6 1 

 '"adnate," 2, 55. 



Petrels, Darwin on, 2. 368. 



Fhanerogamia {see Phaenogams). 



Phasnogams : uni- and multi-axial sym» 

 metry, 2, 126-8 ; unit of composition, 2, 

 136 ;'hehcal growth, ^, 161 ; tissue and 

 leaf differentiation, 2, 229-31, 379; 

 also bark and cambium, 2, 231-3, 379 ; 

 also outer tissue, 2, 2;-i5, 239-42, 253, 

 380 ; wax deposit on leaves, 2, 243-5 ; 

 differentiation of inner tissues, ^, 

 256-8, 381 ; vascular system develop* 



