574 



INDEX. 



N.B. The numbers refer to the paragraphs 



Primrose tribe, 645 

 PRIMULACEJE, 645 

 Pdvet, 647 

 Proper juice, 86,325 

 Protococcus nivalis, 48 

 Prunus laucerasus, 596 

 Pumpkin, 607 

 Purging-flax, 546 

 Pyroligneous acid, 376, 403 



QUERCITRON, 896 



R. 



RADIATE flowers, 630 



Radicle, 111 



Radish, 529 



Ragged Robin, 542 



Rape, 529 



Rape seed, 533 



Rape oil, 371 



Raspberry, seeds of, 451 

 fruit of, 470 



Receptacle, 285, 468 



Red dyes, 392-394 



Red Snow, 48, 424 



Reindeer Moss, 39 



REPRODUCTION, in Cryptogamia, 423-432 ; in 

 Pbanerogamia, 432-445 



RESPIRATION, in Animals, 280, 281 ; in 

 Plants, 282; during germination, 283, 

 284 ; during flowering, 235 



RHAMNE^E, 583 



Rhizoma, 150 



RHIZOFHORE^E, 598 



Rhododendron, 200, 304, 641, 642 



Rhubarb, 666 



Rice, 734 



Rice paper, 127 



Rock-rose tribe, 536 



ROOTS, general fun.ctions of, 100, 101 ; exten- 

 sion of, 104, 105 ; direction of growth of, 

 107, 108; influence by gravity, 111, 112; 

 distinction of, from stem, 113; structure 

 of, 114, 115 ; absorbent power of, 116-121 



Roots, aerial, 109, 110 



Rootstock, 150 



ROJIACEJE, 593-595 



Rose-apple, 603 



Rose of Jericho, Introd., 418 



Rotation of erops, 207-211 



RUBIACE;E, 624-628 



Rue tribe, 578 



Runners of strawberry, 150 



Ruscus aculeatus, 220 



Rush tribe, 719, 720 



Rust of wheat, 52 

 RUTACE.E, 572 



SAFFRON, 397 



Sage, 465 



Sagittaria, 227 



Sago, 143, 337 



Sago Palm, 725 



Salep, 697 



Salicornia, 665 



Salsola, 665 



Samolus, 465, 645, 646 



Sand-Reed, 177, 736 



Sandy soil, 177, 178 



Sanguisorba, 597 



Sap, ascent of, 116-121, 131, 318 : descent of, 



140, 299 

 Sap-wood, 131 

 Sargasso weed, 43 

 Sarracenia, 242, 243 



SAXIFRAOK.E, 615 

 Scales of bulbs, 149 

 Scammony, 652 

 SCITAMINE.E, 698 

 Screw-Pine, 726 



SCROPHULARINEJE, 660, 661 



Scurvy-Grass, 535 



Sea Kale, 529, 533 



Sea Weeds, 40-48 ; absorption in, 102 ; fruc- 

 tification of, 424-426 



Secretion, receptacles of, 98 



Secretions of Plants, general nature of, 359- 

 363 ; special characters of, 364-404 



Sedge tribe, 732, 733 



Sedum, 266, 609 



Seed, nature of, 19, 21 ; formation of, 439 ; 

 structure of, 440 ; germination of, 440-445 ; 

 prolonged vitality of, 445-451 ; dispersion 

 of, 471 ; 'characters derived from, in classi- 

 fication, 500 



Selection of food, by Plants, 122 



Sensitive Plant, 421, 422 



Sepals, 455, 456, 458 



Shepherd's Purse, 530 



Silene, 542 



Silex, deposits of in Plants, 201, 202 



Silk-cotton tribe, 552, 553 



Silkworms, fungous disease of, 54 



Sleep of Plants, 417 



Smut of corn, 52 



Snap-dragon tribe, 660, 661 



Snow-berry, 623 



Soil, nature of, 176-178; purposes of, 179; 

 formation of, 205 ; exhaustion of, 206 



SOLANEJE, 656 



Solfatara, 296 



