2 5 6 



INDEX. 



Spikelet, 176 



Spiral vessels, 143, 225 



Spirogyra, occurrence of 33; to 

 grow, 34; gross anatomy, 34; 

 minute anatomy, 35; annota- 

 tions, 39 



Spongy parenchyma, 210, 221, 

 232 



Sporangia, no, 120 



Sporogonia, 64, 76, 83, 86, no, 

 120 



Staining, 13 



Stamens, 132, 138, 157, 162, 178, 

 194, 202, 212, 226, 233, 238 



Starch, 37, 40, 112, 158 



Stigmas, 178, 190, 194, 204, 217, 

 234 



Stigmatic cells, 77, 83, 94; sur- 

 faces, 213 



Stomata, 61, 66, 68, 71, 78, 101, 

 119, 127, 138, 152, 188 



Strophiole, 205, 215 



Styles, 178, 190, 204, 217 



Subterranean stem, 199 



Sulphuric acid, 6, 13 



Supplementary guard-cells, 66 



Suspensor, 242 



Synergidse, 241 



TAP root, 237 



Teeth of the peristome, 97, 101 



Testa, 205, 215, 236 



Tetradynamous stamens, 237 

 Thalloid stem, 77, 128 

 Thallus, 59, 66, 77 

 Thecse of anther, 189, 203, 2J2, 



234 



Tillering point, 173 

 Tracheides, 143, 147, 164, 167, 182 

 Transfusion tissue, 167 

 Trichomes, 61, 66, 75, 105^, 120, 



122, 125, 173, 191 

 Trillium, description of, 197; 



gross anatomy, 198; minute 



anatomy, 205; annotations, 215 

 Turgidity of cells, 30, 32, 38 



VEINS, 109, 201, 2ii 

 Venation, 109, 218 

 Vesicle of antherozoid, 73, 83, 94, 

 123 



WHITE rust, 43 



Wings of thallus, 60; of pollen, 



158 

 Wood, 135, 142, 164; cells, 143; 



parenchyma, 209 



XYLEM, 113, 142, 143, 147, 153, 

 209 



ZOOSPORES, 26, 47, 50 

 Zygophyta, 48 

 Zygospores, 35, 39, 42 



