472 



PLANT PHYSIOLOGY 



Saponification of fats, 47 

 Saussure, De, 84 



SCHANTZ, 290 



schonbein, 103 



Schroder, 192 



ScHULOV, 257 



Schulze, 74 



Seeds, oily and starchy, 36-37 



Seismonasty, 435-437 



Selective permeability, 14, 28 



Semipermeable membranes, 14-15, 



25-26 

 Semper, 63 

 Senebier, 181 

 Shade plants, 196-197 

 Shedding of fruit, 441 

 Shirley, 372 

 Shive, 141 



Short-day plants, 423-425 

 Shull, 21 



Soil-absorbing complex, 253 

 Soil fertility, methods of determin- 

 ing, 258-264 

 Soil solution, 254 

 Sols, 4 

 Solution, balanced, 139-142 



Crone's, 257 



Knop's, 240 

 Specificity of ferments, 66-67 

 Stages, in the development of plants, 

 416-418 



of yarovisation and light, 419 

 Stanley, 55 

 Starch, 43, 45 

 Starch synthesis, 162-164 

 Starchy and oily seeds, 36-37 



C5TARLING, 124 



Sterile cultures, 221-222 

 Steward, 31-32 

 Stimulation of growth, 160-161 

 Stomatal movements, 305-306 

 Stoma tal regulation of transpiration, 



308-310 

 Stratification, 460 

 Stroma of plastids, 168 

 Structure of seeds, 112-113 

 Succulents, 49-50, 367 



Suction tension, of cells, 22-24 

 methods of its determination, 24 

 of roots, 282-283 



Sugar content in overwintering 

 plants, 353 



Sulphur bacteria, 183-184 



Sulphur cycle, 245 



Sulphydryl group, 108 



Superoptimal temperature, 361 



Swelling of colloids, 8, 11, 93 



Swelling of seeds, 20 



Temperature and the formation of 



potato tubers, 426 

 Temperature coefficient, 91 

 Temperature influence on plants, 



361-363 

 Thatcher, 444 

 Theory, of cohesion, 332 



of equilibrium, Donnan's, 30-31 



of oxidation, Wielaiid's, 102 



of permeability, Overton's, 26, 48 



Traube's, 14, 26 

 of photosynthesis, 160-162 

 of respiration, Palladin's, 101 



Warburg's, 104 

 of stages, Lysenko's, 416-422 

 Thermonasty, 433 

 Thermotropism, 155-157 

 Time, presentation, 147 

 Toxic action, of heavy metals, 141 



of salt solutions, 139-143 

 Translocation, of assimilates, 337- 

 338 

 of stimulus, 433 

 Transpiration, 294 



cuticular and stomatal, 303-305 

 Transpiration balances, 299 

 Transpiration coefficient, 300 

 Transpiration formula, Dalton's, 301 

 Transpiration organs, 303-305 

 Transpirograph, 299 

 Transplanting, 414 

 Traube's theory of permeability, 14, 



26 

 Traumatropism, 158 



