102 UADIATION HlOLOtiV 



(1036) Optical proportios of lithium fluoride in tho cxtnMnc ultraviolet. 



Phys. Rev., H): IMl :M5. 

 (1937) The pffect of irradiation on the transniissiou of lithiutn lluoridc J. 



Opt. Soc. Amor., 27: 72-74. 

 (1940) .\n estimate of the ahsorptiou of air in the cxtreiiic ult raviol(>t. J. 



Opt. See. Amor., 30: 125-132. 



Sehoen, \. L., and E. S. Hodge (1950) Photographing .spectra in the vacuum ultra- 

 viol«>t. J. Opt. Soo. Amer., 40: 23-28. 



Schott-Jena Filter Catalog (1952) Available from Fi.sh-Schurman Corporation, New 

 Hochellc, New York. 



Sehulman, J. H. (194G) Luminescence of (Zn,Be)2Si04:Mn and other manganese- 

 activated phosphors. J. Appl. Phys., 17: 902-908. 



Schidz, P. (1947a) Eine Strahlungsquelle fiir kontinuierliche Strahlung hoher 

 Strahldichte. Z. Naturforsch., 2a: 583-584. 



(1947b) Elektrische Entladungen in Edelgasen hei hohen Drucken. I. 



Bogenformen und spectrale Eigenschaften der Edelga.shochdruckentladungen. 

 Ann. Physik, 1: 95-106. 



(1947c) Elektrische Entladungen in Edelgasen bei hohen Drucken. II. 



Linienhafte und kontinuierliche Strahlung sowie Gesamtstrahlung in Abhilngig- 



heit von Druck und Stromstiirke. Disku.ssion der I*]rgelmisse. Ann. Physik, 1: 



107-118. 

 Sehwarz, E. (1949) Sensitivity of Schwarz-Hilger thermopiles. Rev. Sci. Instr., 20: 



962. 

 Shurcliff, W. A. (1949) Multi-slit double monochromator using no moving parts. 



J. Opt. Soc. Amer., 39: 1048. 

 Sinsheimer, R. L., and J. R. Loofbourow (1947) Christiansen filters for the ultra- 

 violet. Nature, 160: 674-675. 

 Sommer, A. (1947) Photoelectric cells. Chemical Publishing Company, Inc., 



Brooklyn. 

 Sommer, A., and W. E. Turk (1950) New multiplier phototubes of high sensitivity. 



J. Sci. Instr., 27: 113-117. 

 Stamm, R. F., and J. J. Whalen (1946) Energy distribution of diffraction gratings 



as a function of groove form. J. Opt. Soc. Amer., 36: 2-12. 

 Stockbarger, D. C. (1949) Artificial fluorite. J. Opt. Soc. Amer., 39: 731-740. 

 Stockbarger, D. C, and C. H. Cartwright (1939) On lithium fluoride-quartz achro- 

 matic lenses. J. Opt. Soc. Amer., 29: 29-31. 

 Studer, F. J., and D. A. Larson (1948) Emission spectra of zinc cadmium sulfides. 



J. Opt. Soc. Amer., 38: 480-481. 

 Sweet, M. H. (1946) Logarithmic photometer. Electronics, 19 (Nov.): 105-109. 

 Taylor, A. H. (1944) Measuring germicidal energy. Gen. Elec. Rev., 47 (Oct.): 



53-55. 

 Terrien, J. (1936) Transparence de la silice fondue dans I'ultraviolet extreme. Rev. 



opt., 15: 258-262. 

 Thayer, R. N., and B. T. Barnes (1939) The basis for high efficiency in fluorescent 



lamps. J. Opt. Soc. Amer., 29: 131-134. 

 Uber, F. M. (1939) Ultraviolet spectrophotometry of Ztn man^ pollen with the 



quartz microscope. Am. J. Botany, 26: 799-807. 

 Weigert, F., and H. Staude (1927) Uber monochromatische Farbfilter. Z. physik. 



Chem., 130: 607-615. 

 West, W. (1946) Colorimetry, photometric analysis, and fluorimetry. In, Physical 



methods of organic chemistry, ed. A. Weissberger. Interscience Publishers, Inc., 



New York. Pp. 823-867. 



