580 



Index. 



Mutation, 24; coefficients, 415, 

 504; in nature, 300; in pre- 

 Darwinian days, 1 1 ; laws of, 

 247; progressive, 6, 68; retro- 

 gressive, 6, 68; smaller than 

 variations, 55 ; theory, 3. 



Nanisme, 360. 



Nature abhors perpetual self- 

 fertilization, 153. 

 Naudin, 36, 169 



NlLSSON^ 114. 



Nomen specificum, 19. 



Nomenclature, 172. 



Nutrition, and selection, 515, 536 ; 



and variability, 516; Effects of, 



131; high, 551. 

 Nutritional modifications, 132, 



Oats, Anderbecker, 81. 



Oenothera alhida, 229, 349; bi- 

 ennis, mutation period, 440, 

 495; biennis, type, 431; brevi- 

 stylis, 315; cruciata, 455; ellip- 

 tica,2,92>', fatua, 419; gigas,226, 

 318; gigas, appearing thrice, 

 327 ; gigas, chromosomes, 325 ; 

 gigas-nanella, 375 ; hirsutis- 

 sima, 455 ; laevifolia, 308 ; lae- 

 vifolia, origin of, 266; lepto- 

 carpa, 353 ; Lamarckiancu, 

 length of fruit, 528; Lam., 

 long-fruited race, 545 ; La- 

 marckiana nana, 2)^2 ; Lam. X 

 O. biennis, 299; Lamarckiana 

 X O. nanella, 298; Lamarck- 

 iana, pitcher, 484; Lamarck- 

 iana, premutational period, 496 ; 

 Lam., short-fruited race, 546; 

 lata, 239, 310, 402; lata na- 

 nella, 239, 304; lataXO. bi- 

 ennis, 299 ; lata X O. nanella, 

 299; muricata, type, 431; na- 



nella, 235, 360; nanella ellip- 

 tica, 239 ; nanella lata, 374 ; na- 

 nella oblonga, 239, 375 ; na- 

 nella scintillans, 375 ; oblonga, 

 234, 284, 2>2>7; rubrinervis, 230, 

 282, z^7 ; scintillans, 243, yjy ; 

 scintillans-nanclla, 375; semi- 

 lata, 358; spathulata, 419; sub- 

 linearis, 399; subovata, 419. 



Oenotheras, Anatomy of the 

 stem, 335; seeds of, 437. 



Ogive, 49. 



Oleaster, 124. 



Olive, 124. 



Othonna crassifolia, 145. 



Oxalis corniculata, 58. 



Pangenesis, 38, 39; Intracellu- 

 lare, 57, 61. 



Papaver bracteatum monopeta- 

 lum, 16; dubium, 175; somni- 

 feriim polycephalum, 138. 



Parsnip, 90, 124. 



Partial fluctuation, 6; variability, 



143- 

 Pastinaca sativa, 124. 

 Pears, 179. 

 Pearson^ 157. 

 Peas, 123. 

 Pedigrees, 503. 

 Pelargonium zonale, 195. 

 Period, susceptible, 519. 

 Periods, mutation, 207. 

 Periodicity, Darwin's belief in, 



36. 

 Petalomany, 195. 

 Phaseolus vulgaris, 47. 

 Phyt Optus, 407. 

 Pitchers, 61, 470, 485. 

 Pliny, 176. 

 Ploetz, 50, 131. 

 Plusia gamma, 320. 

 Plus-variations, 51. 



