Index. 



581 



POHL, 219, 240, 315, 408. 



Polymery, 481. 



Polymorphism, 173; by hybridi- 

 zation, 46; systematic, 45. 

 Portunion mocnadis, 563. 

 Pofentilla Tormcntilla, 174. 

 Premutation, 490, 510. 

 Primula acaiilis, 20; veris, 20. 

 Probstei, 108. 



Propagation, vegetative, 82. 

 Prophylls, 487. 

 Proskowetz, von, 520. 

 Prunus Lauro-Cerasus, 49. 

 Pterophorus, 407. 



Quartile, 526. 

 Quetelet's law, 47. 



Races, Instability of, 120. 



Radish, wild, 90. 



Ramsay, 335. 



Ranunculus acris pctalomana, 



194 ; arvensis inermis, 196. 

 Ray-florets, 556. 

 Regression, ^z, 88, 120. 

 Reinke, 364. 

 Retrogression, 123. 

 Reversion to mediocrity, 95. 

 RiMPAU, 96. 

 RiSLER, 96. 



Rivett's bearded wheat, 98. 

 Rogues, 78. 

 Rosa, 495. 

 RozE, E., 321. 

 Rub us, 495. 



RiJMKER, Kurt von, 91. 

 Running out, 96. 

 Russell, 487. 

 Rye, Schlanstedt, 113. 



Sacciilina carcini, 563. 

 Saint-Hilaire, 17. 

 Salter, 147. 



Saplings, 493. 



Saxifraga crassifolia, 61. 



Scahiosa atrupiirpurca, 197. 



Schaafhausen, 36. 



Schindler, 520. 



Schubeler, 98. 



Scott, W. B., 66, 201, 



Sedum crispum, 182. 



Seeds, 153; Change of, 126; orig- 

 inal, 126. 



Seelhorst, vox, 519. 



Selection, agricultural and horti- 

 cultural, 77; and nutrition, 562; 

 cessation of, 122; empirical, 

 107; in a minus direction, 140; 

 in agriculture, 79; in the field, 

 122; limits of, 119; method of, 

 121; methodical, 108; theory, 

 28. 



Semper, 63. , 



Scnccio Jacohaca, 172. 



Sensitive period, 161. 



Serres, Olivier de, 176, 



Shirreff, 178. 



Slum latifolium, 364. 



Six, 266. 



Social questions, 154. 



Spach, 437. 



Species, elementary, 57, 167, 171; 

 incipient, 416; inconstant, zyj; 

 Linnean, 20; sterile, 402. 



Specific characters, 186. 



Spencer, 59, i35» I54. 212. 



Spinacia, 204. 



Spontaneous changes, 53. 



Sports, 5. 



Stahl, 144. 



Sterility, 417. 



Strawberries, Gaillox, 32. 192. 



Struggle for existence, 212. 



Subspecies, 45, 165, 171. 



Substitution. 4. 

 I Subvariations. Delpixo. 312. 



