INDEX. 



485 



RADIO. 



E. 



Radish, 395 



Ranunculacex, 128 



Ranunculus acris, 365 



Raphanus sativus, 365, 395 



Reinke, nectar-secreting glands of 

 Prunus avium, 405 



Reseda lutea, 117 ; measurements, 

 118, 119 ; result of experiments, 

 339 ; self-fertile, 365 



odorata, 119 ; measurements, 



120-123 ; self-fertilised scarcely ex- 

 ceeded by crossed, 289 ; seeds, 316 ; 

 want of correspondence between 

 seeds and vigour of otfspring, 

 328 ; result of experiments, 336 ; 

 Bterile aud self-fertile, 358, 365 



Eesedaceai. 117 



Rheum rhaponticum, 403 



Rhexia glandulosa, 364 



Rhododendron, spontaneous cross- 

 ing, 396 



Rhododendron aaaloides. 435 



Rhubarb, 396, 403 



Ribes aureum, 435 



Riley, Mr., pollen carried by wind, 

 408 ; Yucca moth, 421 



Rimpan, on the cross-fertilisation 

 of Rye, 341 ; on the self-fertility 

 of wheat, 370 



Rodgers, Mr., secretion of nectar in 

 Vanilla, 404 



Rye, experiment on pollen of, 377 



Salvia coccinea, 93; measurements, 

 93 ; early flowering of* crossed, 

 292 ; seeds, 315, 322 ; partially 

 self-sterile, 363 



glutinosa, 430 



Salvia grahami, 429, 431, 436 



tenori, 362 



Sarothamnus scoparius, 163; mea- 

 surements, 165-167 ; superiority 

 of crossed seedlings, 285. 289 ; 

 seeds, 323 ; self-sterile. 360 



8TACHT3. 



Scabiosa atro-purpurea, 172; mea- 

 surements, 172, 173 



Scarlet-runner, 150 



Scott, J., Papaver somniferum, 108 ; 

 sterility of Verbascum, 330 ; On- 

 cidium and Maxillaria, 331 ; on 

 small seeds of Papaver, 355 ; on 

 Primula scotica and Cortusa mat- 

 thioli, 362 



Scrophulariacex, 63 



Seeds, size and germination of, 352. 



SelagineUa, 413 



Self-fertile varieties, appearance of, 

 347-351 



Self-fertilisation, mechanical struc- 

 ture to check, 383 



Self-sterile plants, 329-347; wide 

 distribution throughout the 

 vegetable kingdom, 341 ; differ- 

 ence in plants, 342 ; cause of 

 self-sterility, 343 ; affected by 

 chauged conditions. 344-346 ; 

 necessity of differentiation in the 

 sexual elements, 347 



Senecio cruentus, 335, 364 



heritieri, 335 



maderensis, 335 



populi/olius, 335 



tussilaginis, 335 



Sharp, Messrs., precautious against 

 intercrossing, 396 



Snow-flake, 176 



Solanacese, 188 



Solanum tuberosum, 362, 389 



Specularia perfoliata, 174 



speculum, 174 ; measurements, 



175, 176; crossed and self-ferti- 

 lised, 276 ; early flowering of 

 crossed, 293; seeds, 323; self- 

 fertile, 369 



Spencer, Herbert, chemical affinity, 

 462 



Spiranthes autumnalis, 391, 424 



Spreugel, C. K., fertilisation of 

 flowers by insects, 5, 6 ; Viola 

 tricolor, 123 ; colours in flowers at- 

 tract and guide insects, 372-374 ; 

 on Aristolochia, 419 ; Aconitum 

 napellus, 431 ; importance of in- 

 sects in fertilising flowers, 460 



Stocky* coccinea, 430, 431, 436 



