230 



SUBJECT INDEX 



Tohacco necrosis virus (Rothainstcd) two 

 spherical components, '22, 53 



Tol)acco ringspot virus, dimensions, 65 

 spherical particles, "22 

 thermal constants, 113 

 thermal inactivation, 110 

 and denaturation, 112 



Tomato aspermy virus, lack of observed 

 particle, 21 



Tomato aucuha mosaic virus. X-ray 

 diffraction, 56 



Tomato bushy stunt virus, .tee Bushy 

 stunt virus 



Tomato spotted wilt virus, lack of ob- 

 served particle, 21 



Transforming factor r to III pneumo- 

 coccus, 5 



Tryptophane, 152 



Turnip yellow mosaic virus protein and 

 nucleo protein, 53, 57 



Tyrosine, 152 



U 



Ultracentrifuge, 66 

 Ultrafiltration, 22 

 Ultrasonic waves, 169 

 Ultraviolet action spectra, 13, 156ff. 



summarized, 166 

 Ultraviolet light, molecular absorption of, 

 146 



Vaccinia virus, chemical composition, 7 



dimensions, 5, 65 



in membrane, 21 



inactivation dimensions, 92 



Lea's analysis of internal structure, 92 



optical microscopy, 15 



ultraviolet action spectrum, 163 

 Vacuum ultracentrifuge, 35 

 Van de Graaff accelerator, 80 

 Van der Waals forces, 210 



additivity of, 211 



between parallel planes, 211 



spheres, 212 

 Vapor pressure at virus surface, 122 

 Virology, 2 

 Virus adsorption, 123 



Virus adsorption, and salt concentration, 



126 

 antigens, 181 



antiserum condjination, 21 

 assay, 10 

 attachment, enzymatic, 129 



reversil)le, 129 



and surface charges, 128 

 Virus description, 194 

 dimensions, 5, 65 

 energy turnover, 122 

 fact summary, 191 



genetic unit and velocity of light, 218 

 genetics, 184 

 hydration, 33 

 mating, 186 



motion studies, examples, 45 

 nmltiplication, 3, 192 



and physical laws, 219 



forces in, 202 



spontaneous mutation study, 188 



template idea, 186 

 recombination, 184 

 self duplication assembly, 216 

 serology, 8, 123, 132 

 size, 15 

 surfaces, 122 



description of, 144 

 titer, 10 

 Viscosity, 24, 40 

 and hydration, 41 

 and volume fraction, 42 

 measurement, 42 



X 



X-radiation, and bacterial killing ability, 99 

 and bacteriophage activity, 98 

 and bacteriophage adsorption, 98 

 and lysis from without, 99 



X-ray, action on viruses, 86 

 diffraction, 54 



and virus hydration, 57 

 energy release pattern, 87 

 scattering, see Scattering 

 tube, high power, 58 



Yellow fever virus, dimensions, 65 



