418 



SUBJECT INDEX 



Survivorship curves 51, 297, 317 



Symbol, 8, 30, 390 



Symbolic events See Events, symbolic 



— representation 7 

 Symbolization 7 

 Synapse 157 

 Synaptic delay 234 

 System analysis 37 



— parameters 182 



— theory 5 



Systems 36 See also Communication sys- 

 tems 

 — , multipart 38 

 • — , two-part 28, 30 



Target 276, 281 



— theory 276, 298, 300, 301, 305 



— volume 276, 289 

 Tautomeric form, of purines 141 

 Temperatures, chemistry and biochemistry 



at low 171 



Template 67, 71 



Theobromine 136, 137 



Theophylline 137 



Thermal killing 297, 305, 306 



Thermodynamics 52, 192, 196 



— , equation of state in 307 



Thermodynamics, irreversible 194, 198 



— , second law of 117, 120, 196 



Thiamine 208 



Threonine 70, 90 



Threshold, fluctuating 153, 161 



Thymine 63, 141 



Thyroglobulin 72 



Thyroxine 72, 207, 208 



Tissue homogenates, incorporation of acti- 

 vity from 130 



r-Measure 27, 29 



Tobacco mosaic virus 70, 76, 81, 90, 93, 

 278 



Toluene 291 



Tomato bushy stunt virus 90 



Torulopsis utiUs 126, 131 



Transducer 3 1 



Transforming principle 276 



Transphosphorylase 86 



Tribolium confiisum 293 



Trichocyst 220, 221 



Triticum durum, vulgare 73 



Tropomyosin 81, 86, 104 



Tropylium ion 291 



Trypsin 114,268,288 



Trypsinogen 81, 87 

 Tryptophan 70, 90 

 Tumors 309 



Turnip yellow virus 90, 93 

 Twins, monozygotic 360 

 Tyrosine 70, 90, 109 

 Tyrosine-O-sulfate 72 



Uhraviolet radiation 252, 263, 273, 274, 287, 



290,297,299, 306, 312, 353 

 — action spectra 274, 288 

 Uncertainty 19, 27, 32, 41, 230, 235, 368 

 — , conditional 28 

 — , — , average 30 

 — , functions 207 

 — , joint 27 



— , mappings in generalized space 184 

 — , measure of 19, 21 

 — , relative 369 

 —, unit of 185 

 Unitization 29, 218 

 Unsaturated fatty acids 208 

 Uridylic acid 70, 90 

 Urosil 66 



Valine 70, 90 



Van der Waals forces 109 



Variables 25 



Variance 322 



Vascular disease 342, 343 



Vasopressin 66,69,74,81,87 



Vibriolysin 115 



Virus 223, 276, 299, 301 



Vitamins 204, 242 



— , B 207 



— , D 208 



Vole 304 



Wool 81 



Word 8, 107, 212, 363 



Xanthine 136, 137 



X-rays 243, 252, 290, 293, 300, 305, 337, 

 353, 355 



Yeast 215,300,301,310 

 —.diploid 301,305 

 Yeast invertase 268 

 Yule distributions 123 



Zein 104 



ZoUner illusion 385 



