Index 



275 



Sperry; Naylor and S., 44, 125, 



250 

 Spirodela, 246 

 squash fruit, aseptic seeds from, 



118 

 squash stem, cultivation of pro- 

 cambium, 49 

 stamen hairs, cultivation of, 20 

 Stanley, 200, 259 

 starch, resorption of, 193 

 statistical analysis, 165-168 

 statistical significance of re- 

 sults, 166 

 stele, 195 



Stellaria media, 193, 235 

 stem tips, 50 

 sterilization of nutrients, 106, 



107 

 sterilizer, Arnold, 69, 107 

 Steward, Berry, and Broyer, 56, 



246 

 stills, 69 



stinging hairs, cultivation of, 20 

 Stingl, 45, 58, 233, 251 

 stipular gemmae of Marattia, as 



culture material, 125 

 stock cultures, 113, 132 

 stomatal guard cells, cultivation 



of, 20 

 stone cells, 222 

 stone fruits, 45 

 Stout and Arnon, 70, 93, 237; 



Arnon and S., 70, 93, 237 

 Strangeways, 230 

 Stukeley, 66 



substrata, nutritive (see nutri- 

 ents) 

 sucrose, 95, 96, 103, 105, 106, 



185 

 Suessenguth; Essenbeck and S., 



45, 233 

 sugar, 71 

 sulfur, 70, 92 

 sulfuric acid, 71, 105 

 sunflower, cultivation of callus 



from, 52 

 sunflower roots, 105 

 suspensor, 219 



Swingle; Priestley and S., 48, 



250 

 Symphoricarpus, 28 



T 

 tap water, 70, 92 

 Taraxacum, 220 

 temperature, optimal, 76, 144, 



145 

 temperature effects, 57, 76, 144, 



145 

 temperature gradients, 218 

 terminal growing points, 50 

 terminal meristems, 50 et seq. 

 test-tube cultures, 131, 146, 147 

 Theophrastus, 42, 260 

 thiamin, 97, 100, 103, 104, 106, 



108, 185 

 thiazole, 97 



Thielman (Tauja-Thielman), 

 28, 95, 235, 239; T. and 

 Berzin, 94, 247; T. and Pelece, 

 98 99 244 

 Thimann, 99, 211, 244, 255; T. 

 and Koepfli, 210, 255; T. and 

 Skoog, 99, 210, 255, 260; T. 

 and Went, 210, 244 

 Thunbergia, 28 

 tile, for walls, 75 

 ' ' tinctura metallorum, ' ' 66 

 tissue broth, as nutrient, 90 

 tissue culture, 9, 12, 35 

 tissue juices, toxicity of, 27 

 titanium sulfate, 105 

 titration of virus concentration, 



200, 201 

 tobacco, cultivation of procam- 



bium, 49 

 tobacco callus, 105 

 tobacco fruits, aseptic seeds 



from, 118 

 tomato roots, 40, 62, 64, 98, 105, 



113, 179, 180, 181, 182 

 tomato seeds, 118 

 totipotency, 4, 8, 12, 30, 35, 44, 



212 

 toxicity of gas, 75, 76 

 toxins, inorganic, 202 

 toxins, organic, 202 



