690 



Subject Index 



Temperature, effect on early forms of 

 metabolism 650-651,652 



effect on metabolism 569-570 



effect on plant respiration 568 



of primaeval Earth 109, no, 114 



origin of life at high 655 

 Template hypotheses 439 

 Tertiary period, enzyme activity during 

 181 



flora and fauna 1 16 



formation of organisms during 178 

 Thermal reactions, of amino acids 256-261 

 Thermodynamics, of irreversible reactions 

 418-427,485-490, 500 



of open systems 444-454 

 Thermophilic organisms 652 

 Thiobacillus 210 

 Thiobacilltis denitrificans 520 

 Thiobacillus tliiooxidans 227, 628, 629 

 Thiobacillus thioparus 629 

 Thiotrix 629 

 Threonine, composition of 249 



in plants 410 



peptide bonds in 233 



synthesis of 143, 145 

 Thymine, in bacteria 324, 325, 328 

 Thyroid gland, proteins in 225 

 Tipula virus 393 

 Tobacco, protein in cells of 405 

 Tobacco mosaic virus 286, 314, 342, 370- 

 371,372, 378, 495> 496 



effect of iodoacetate on 305 



effect of metals on 305 



infective nucleic acid from 303-306 



long range forces in 393 



ribonucleic acid in 350-351, 4^8 

 Tomato bushy stunt virus 390 

 Torulopsis uiilis, amino acids in 227 

 Transamination 535-539 

 Transduction 318-319, 371, 372 

 Triboluminescencc 95 

 Tricarboxylic acid cycle 588, 589, 590 

 Triphosphopyridine nucleotide 586 



in fermentation 596, 597 



reduction of 590-591, 597 

 Trypsin 492 



complexes formed from 473 



digestion of serum albumin by 473-475» 

 476, 477 



proteolytic activity of 473-475, 476, 477 

 Trypsinogen 237, 238 

 Tryptophan, deamination of 540 



formation of 193 



in plants 410 



peptide bonds in 233 

 Tunicates, vanadium in 79, 80 

 Turnip yellow virus 390 

 Tyrocidin, amino acids in 235, 236 

 Tyrosinase 566, 569 

 Tyrosine, formation of 193 



in bacteria 228 



in plants 410 



in the thyroid 225 



peptide bonds in 233 



Ultraviolet light, activating gases 136, 137 

 amino acids formed by 151-157 

 chemical action of 96 

 effect on origin of life 124, 136-139 

 organic compounds formed by 1 31-132, 



136-139 

 photosynthesis by 136-139 

 screening of by ozone layer 183 



Uniformitarian principle 38, 76-77 



Uranus, ammonia on 71 

 atmosphere of 10 

 composition of 10 

 methane on 71 



Urea 578 



biosynthesis of 540, 541 



formed by electrical discharge 125 



Urease, combination with ribonucleic acid 



499 

 Urechis caupo 507 

 Uricolysis, enzymes in 512 

 Uridine diphosphate 347, 348, 349, 354 

 Uridine monophosphate 346, 347, 349 

 Uridine triphosphate 354 

 Uridylic acid, in bacteria 324, 326, 328 

 Uridylitic acid 351 

 Uroporphyrins 646 



Vaccinia 315 



Valine, composition of 249 



in haemoglobin 508 



in plants 410 



peptide bonds in 233 



reduction of 547 



synthesis of 193, 194 

 by light 144 



by ultraviolet light 153, 154 

 Vanadium, in tunicates 79 

 Vasopressin, amino acids in 235, 242 



species differences in 228, 243 

 Venoms, evolution of 511 

 Venus, atmosphere of 19-21, 84 



composition of 70 



oxygen on 132 

 Vibrio spp. 226 

 Vicilin 579 



Vigna sesquipedalis 558 

 Virusfes) 341-342, 371, 372, 373 



enzymes in 197 



growth of 286 



nature of 313-320 



nucleic acids in 371, 372, 373, 375 



nucleoproteins in 493 



origin of 284, 285 



protein synthesis in 364 



