376 



PLANT-LIFE 



Primrose, pollination of, 318 



Primulales, 215 



Procarpium, 87 



Products of plant chemistry, 272 



Proteins, 272 



Prothallus, 142, 148, 156, 160, 161, 



163, 166, 169, 172, 176, 184, 185 

 Protonema, 129, 137, 138, 139, 140, 



142 



Protoplasm, 1, 252 

 Protoplasts, 250, 268 

 Prunus spinosa, 344 

 Psamma arenaria, 267, 360 

 Psilotacea?, 162, 163 

 Psilotum, 163 

 Psychoda fly, 314 

 Pteridophytes, 142-170 

 Pteridosperms, 228, 229-234, 243 

 Puccinea graminis, 107, 108 



suaveolens, 107 

 Puff ball, Giant, 94 

 Puff balls, 93, 108, 112 

 Pulsating vacuole, 41 

 Purple Bacteria, 15, 16, 19 



Dead Nettle, 352 

 Pyrenoids, 32, 36, 128 

 Pyrola, 215 

 Pythium, 100-104, 106 



Baryanum, 100 



Queen of the Meadow, 362 

 Quercus pubescens, 350 



Robur, 211 



Suber, 211 

 Quillwort, 167 

 Quinine, 273 



Raceme, 205 

 Kachis, 146 

 Radicle, 204 

 Raffiesia Arnoldi, 295 

 Rafflesias, 295 

 Ranunculus, 212 



ficaria, 279 , 300 

 Raspberry, 299 



Ravenala Madagascariensis, 202 

 Receptacle, 323 

 Red Algae, 69 



Seaweeds, 85 



-Snow, 54 



Redwood Tree, 188 

 Reed-Mace, 196, 307 

 Reeds, 305 



Reindeer-Moss, 118 

 Reproduction, sexual, 301 

 Resin, 190, 337 

 Rest-harrow, 345 

 Rhizoids, 133, 134 

 Rhizome, 158, 200, 298 

 Rhizophore, 165 

 Rhododendrons, 215, 348 

 Rhodophycese, 69, 85 

 Rhodymena palmata, 77 

 Rhubarb, 258, 348 

 Riccia, 123 



fluitans, 123 



natans, 123, 124, 127 

 Ricciacese, 123 

 Rice, 199 



Ridla helicophylla, 130 

 Rockrose, 316 

 Rocks, Primary, 221 



Stratified, 222 

 Root-hairs, 260, 261 

 Rootless Duckweed, 198 

 Root, tap-, 205 

 Rosa canina, 280 



rubiginosa, 342 



spinosissima, 344 

 Rose, Burnet, 344 



Dog, 280 



Scotch, 344 



Roses, 213, 299, 316, 329 

 Rotifer associated with a Liverwort, 



131, 291 



Royal Fern, 155, 229 

 Rubus, 280 



Rue-leaved Saxifrage, 339 

 Rumex, 309 

 Ruppia maritima, 196 

 Rushes, 202, 305 

 Rush, Flowering, 198 

 Ruskin on Mosses, 131-132 

 Rust and Smut Fungi, 107 



of Wheat, 107 

 Rusts, 93 

 Rye, 199 



Saccharum officinarum, 199 

 Saddle Fungus, 94 

 Saggitaria saggitifolia, 198 

 Sago-Palm, 180 

 Salad-Burnet, 309 

 Salicineae, 210 

 Salix Babylonica, 210 

 Caprea, 210, 309 



