INDEX. 



235 



Stem, arboreal, 65 ; practical work, 

 208, 210 ; herbaceous, 49 ; prac- 

 tical work, 206 



Stigma, 148 



Stipules, 99 



Stoma, 103 



Stratification, 28, 60 



Style, 148 



Suberised cell walls, 82 



Succinic acid, a product of fermen- 

 tation, 6 



Sugars, formulae of, 4 n. 



Sunflower, stem of, 49; practical 

 work, 206 



Suspensor, 178; in Mucor, 116 



Sweet William, flower of, practical 

 work, 222 



Sycamore, floral diagram of, 186 ; 

 fruit of, 186 ; practical work, 227 



Synergidae, 174; practical work, 223 



Syngenesious, 166 ; pract. work, 221 



Tangential section, 70 



Tannin, 87 



Testa, 16 



Tissue, meaning of term, 36 



Tracheids, of Oak, 78 ; of Pinus, 74 



Tradescantia, cells of hairs on 



filaments of, 12; circulation of 



protoplasm in, 13 ; practical 



work, 201 

 Transpiration, 104 

 Trichome, 131 

 Tropaeolum, flower of, practical 



work, 222 

 Tuber, of potato, 23; practical 



work, 203 

 Tulip, bulb of, 29 ; practical work, 



204 



Tulipa gesneriana, see Tulip 

 Turgidity, 92, 200 

 Turgor, 92, 200 



Vacuoles, 3 



Vascular bundle, open, 122 ; closed, 

 122; collateral, 122 



Vascular bundles, in Pteris, 124; 

 in Oak, 66; in root, 42; in 

 stem of Sunflower, 56 



Vascular cylinder, of root, 36; of 

 stem, 55 



Vascular strands, 36 



Veins of leaves, 100 



Venation, 99 (fig. 45) 



Ventral canal-cell, 134 



Vessels, dotted, 60; of Oak, 77; 

 pitted, 60; spiral, 60; scalari- 

 form, 128; spiral, in Fern rhi- 

 zome, 128; in Oak, 76 



VexiUum, 149 



Vicia faba, see Bean 



Viscum, see Mistletoe 



Wheat, flower of, 157 

 Whorls, 143, 144 n. 

 Wind-fertilised flowers, 155 

 Wing petals, 150 

 Wood, macerated, of Oak, 79; 

 practical work, 208 



Xanthium, burrs of, 188 



Xylem, in Sunflower stem, 56; of 



root, 43 

 Xylem-fibres, 62; of Oak, 78 



Yeast, 1; practical work, 199 

 Zygospore, 115, 117 



