INDEX. 



All references are t« pages, Italic figures indicate illustrations. 



307 



Protoplasm i, 2, 119; movements 



of 164; powers of 116 

 Pteris 69, 109 

 Pyrola chlorantha HSl 



Ranunculus aquatilis 1S2\ leaf of 



99 

 Reaction 165 

 Repair 124 

 Reproductions, 117, 185; sexual 



186, 218; vegetative 186 

 Respiration 145 ; intramolecular 



147 



Rhizoid 19, 21, 46, 76 



Rhododendron, anther and pollen 

 of^O^ 



Riccia sorocarpa JfB 



Rigidity, mechanical IZ2 



Rings, annual 94 



Robinia, stem of 108 



Roots, 59, .6;?, 70; absorption 128; 

 cage 176; cap 60, 63; climbers 

 250; fleshy 67; float 67; hairs 

 61, &S\ hairs and soil ISl; of 

 fern 69; pressure 130; tubercles 

 255; woody '66 



Rose, flower of ;?09; shoot of iOi 



Rotation 167 



Rubus idseus 2S^ 



Runners 77 



Rye, stem of 161 



Saccharomyces cerevisise 31 



Salts, absorbed 138; dissolved 127 



Salvinia natans 196 



Saprolegnia lactea 188 



Saprophytes 137 



Sarcina 10 



Sarracenia purpurea lOT; vario- 



laris !i62 

 Saxifrage 217 

 Scales 106, ZJ^l 

 Scarlet runner 180 

 Scions 214 

 Scotch pine 198 

 Sedge 267 

 Sedum, acre 79; dasphyllum 2H\ 



ternatum 208 



Seed 218; coats 219; of orchid 



280\ pla.its57; pods, dehiscence 



oi278 

 Seedlings 97 



Sempervivum tectorum 2Ji3 

 Sensitive plant, leaf of 183 

 Sepals 206 



Shepherd's purse 200 

 Shoot 45, 72, 82, 211; of larch 



239; of linden 7k; winter 



213 

 Snowberry, fruit of 15B 

 Societies 249 

 Soil 126, 235; water 127 

 Spanish needle, fruits of 28^ 

 Spirogyra 17, 18 

 Splachnum ampuUaceum 50; lu- 



teum 60 

 Spores 41, 185, 188; cases 192, 



196, 273; chain 191; free 190; 



leaves 196; non-motile 189 

 Sporophyte 41, 193; of femworts 



55; of mosses 49; of Phascum 



50; of Polypodium 5Jf 

 Stamens 202 ; union of 203 

 Starch, reserve H3 

 Stele 61, 63, 85, 86, 87, in 

 Stem 46, 83, 95; habit 84; sec- 

 tions of 85, 87, 88, 89, 91, 92, 



94, 122, 16 1 

 Stigma 199 

 Stimulation 164 

 Stipules 99 

 Stolons 77 

 Stoma no 

 Stonecrop 208, 2U 

 Storksbill pods 279 

 Strains 162 

 Strawberry, flower 208; runner 



215 

 Streaming 167 

 Style 199 



Sugar cane, node of 24I 

 Sundew leaves 264 

 Sweetbrier rose 209 

 Sweet pea, flower of 207 

 Sweet violet, anther of 204 

 Symbiosis 252 

 Symphoricarpus 155 

 Sympodial, branching 48 



