196 RADIATION BIOLOGY 



Chirgwiii, 1). II., and C A. Coulsou (1950) The electronic structure of conjugated 



systems. VI. Proc. Roy. Soo. London, A201: 196-209. 

 Conunonor, R., and D. Lipkin (1949) The application of the Beer-Lambert law to 



optically anisotropic systems. Science, 111): 41 4;i. 

 Coulson, C. A. (1947) Representation of simple molecules by molecular orbitals. 



Quart. Revs. London, 1: 144-178. 

 (1948) Kxcited electronic levels in conjiif^ated molecules. T. Lonpi-wave 



ultraviolet ah.sorption of naphthalene, anthracene, and homologs. I'roc. Thys. 



Soc. London, GO: 257 209. 

 Coulter, C. H., F. M. Stone, and E. A. Kabat (1936) The structure of the ultraviolet 



absorption spectra of certain proteins and amino acids. J. Gen. Physiol., 19: 



739 752. 

 Craif!;. 1). 1'. (1950) Configurational interaction in moiecular orbital theory. A 



hiflher appro.vimation in the nonempirical method. Proc. Roy. Soc. London, 



A200: 474-486. 

 Crammer, J. L., and A. Xeuberfjier (1943) The state of tyrosine in ef^jr albumin and 



in insulin as determined by spectrophotometric titration. Bioehem. J. London, 



37: 302-310. 

 Dafilish, C, N. liaxter, and F. Wokes (1948) The spectroscopy of ribofiavine. 



(,2uart. J. Pharm. and Pharmacol., 21: 344-355. 

 Dannenberg, H. (1939) Uber die Ultraviolettabsorption der Steroide. Abhandl. 



preuss. Akad. Wiss. Math.-naturw. KL, Nr. 21: 1-68. 

 Dewar, M. J. S. (1950) Color and constitution. I. Basic dyes. J. Chem. Soc, 



2329-2334. 

 Doty, P., and R. F. Steiner (1950) Light scattering and spectrophotometry of 



colloidal solutions. J. Chem. Phys., 18: 1211-1220. 

 Elion, G. B., G. 11. Hitchings, and P. B. Russ(>ll (1950) The formation of 6-hydroxy- 



and 7-hydroxypteridines from 4,5-diaminopyrimidines and a-ketoacids and esters. 



J. Am. Chem. Soc., 72: 78-81. 

 Ellinger, F. v. (1937) Absorptions-Spektroskopie im lUtraviolett. I: Ab.sorptions- 



spektra der Eiweiss-Korper, Kohlehydrate und Fette einschliesslich ihre Aufbau- 



und Abbau-Substanzen. Tabulae Biologicae, 12: 291-343. 

 (1938) Absorptions-Spektroskopie im Ultraviolett. 11: Absorptionsspektra 



des Wassers, der Kohlensaure und ihrer Derivate, der Ureide, Purinbasen, 



Pyrimidinbasen, Xuclcinsaurcn und deren Spaltprodukten, .\lkaloide einschliess- 

 lich deren Aufbau- und Abbaustoffen, der Glykoside und deren Aufbau- und 



Saltprodukten, verschiedener Stoffe mit biologischer oder toxikologischer 



Bedeutung, einiger Pflanzenfarbstoffe, tierischer und ]:)akterieller Gifte. Tabulae 



Biologicae, 16: 265 354. 

 Euler, II. v., E. Adler, and H. Hellstrom (1936) Liber die Komponenten der De- 



hydrasesysteme. XIL Mechanismus der Dehydrienmg von .Vlkohol und 



Trio.sephosphaten imd der Oxydoreduktion. Iloppe-Seyler's Z. physiol. Chem., 



241: 239-272. 

 Ewing, D. T., F. S. Tomkins, and O. Kamm (1943) The ultraviolet absorption of 



vitamin Ki and the effect of light on the vitamin. J. Biol. Ch(>m., 147: 233-241. 

 Ewing, D. T., J. M. Vandenbelt, and O. Kamm (1939) The ultraviolet absorption of 



vitamins Ki, K>, and some related compounds. J. Biol. Chem., 131: 345-356. 

 Ferguson, L. N. (1948) Relationships between absorption spectra and chemical 



constitution of organic molecules. Chem. Revs., 43: 385-446. 

 Fieser, L. F., and M. Fie.ser (1949) Natural products related to phenanthrene. 3d 



ed., Rcinhold Publishing Corporation, New York. Pp. 184-198. 

 Finkelstein, P., and A. D. McLaren (1949) Photochemistry of proteins. VL pH 



dependence of quantum yield and ultraviolet ab.sorption spectrum of chymo- 



trypsin. J. Polymer Sci., 4: 573-582. 



