SURFACE LAYERS OF CRYSTALS 155 



Davis, Berpcn and Stempel, W. M.; "An Experimental Study of the Reflection of X-Rays 

 from Calcitc," Pliys. Rn. 17 (1921) pp. 608-623. 



Dickinson, R. G. and Gnodliuc, E. .\.; "The Crystal Structure of Sodium Chlorate and 

 Sodium Bromatc," Jour. Amcr. Clicm. Soc. 43 (1921) pj). 2045-2055. 



Du Mond, V. L. and Hollman, J. \V. M.; "New and Unexplained EtTects in Laue X-Ray 

 Reflections in Calcite," F/ivs. Rev. 50 (1036) p. 97. 



Du Mond, V. L. and Hollman, j. W. M.; "Test of the Validity of X-Ray Crystal Methods 

 of Determining e," F/iys. Rev, 50 (1936) pp. 524-537. 



Ehrenherg, W. and Mark, H.; "Uher die natiirliche Hreite der Rontgenemissionslinien," 

 Zlsclir.f. Physik 42 (1927) pp. 807-822 and pp. 823-831. 



Ewald, P. P.; "Die TntcnsitJitcn der Rontgcnretlexe und der Strukturfaktor," PIi\s. Ztschr. 

 26 (1925) pp. 29-32. 



Finch, G. I.; "The Bcilby Layer on Non-Metals," Nature 138 (1936) p. 1010. 



Finch, G. I.; "The Nature of Polish," Trans. Faraday Soc. 33 (1937) pp. 425-430. 



Gogoheridze, D. B.; "Investigation of Surface Structure of Crystals by Means of Reflec- 

 tion of a Monochromatic X-Ray Beam," Jour. Expil. Pli'ys. U.S'.S.R. 10 (1940) pp. 

 96-103 (in Russian). 



Hirsch, F. R. and Du Mond, J. W. M., "X-Ray Evidence on the Nature of the Surface 

 Lajers of Thin Ground Quartz Crystals Secured with the Cauchois Spectrograph," 

 Plm. Rei'. 54 (1938) pp. 789-792. 



Hirsch,'F. R.; "The Beilbv Layer on Thin Ground Quartz Crystals," P/iys. Rev. 54 (1938) 

 p. 238. 



Hirsch, F. R.; "Note on Thin Quartz Crystals as used in the Cauchois Focusing X-Ray 

 Spectrograph," P/ivs. Rro. 58 (1940) pp. 78-81. 



JofTe, A. F.; "The Physics of Crystals," McGraw, New York, 1938, p. 38. 



Kirkpatrick, P. and Ross, P. A.; "Absolute X-Ray Reflectivities of Single Crystals of Cal- 

 cite, Rocksalt, Rochelle Salt, and Barite," Phys. Rev. 43 , pp. 596-600. 



Manning, K. V.; "The Effect of Treatment of the Surfaces of Calcite Crystals upon the 

 Resolving Power of the Two-Crystal Spectrometer," Rev. Sci. Itistr. 5 (1934) pp. 

 316-320. 



Murdock, C. C; "Multiple Laue Spots," Phys. Rev. 45 (1934) pp. 117-118. 



Richtmeyer, F. K., Barnes, S. VV. and Manning, K. V.; "The Effect of Grinding and Etch- 

 ing on a Pair of SpUt Calcite Crystals," P/iys. Rev. 44 (1933) pp. 311-312. 



Sakisaka, Y.; "The Effects of the Surface Conditions on the Intensity of Reflexion of 

 X-Rays by Quartz," Japanese Jour. P/iys. 4 (1927) pp. 171-181. 



Sakisaka, Y.; "Reflexion of Monochromatic X-Ravs from Some Crystals," P roc. Pliys. - 

 Math. Soc. of Japan, Series III, v. 12 (1930) pp. 189-202. 



Sakisaka, Y. and Sumoto, I.; "The Eft'ects of the Thermal Strain on the Intensity of Re- 

 flexion of X-Ravs by Some Crystals," Proc. Phys.-Math. Soc. of Japan, Series III, 

 V. 13 (1931)pp.'211-217. 



Wagner, E. and Kulenkampf, H.; "Die Intensitat der Reflexion von Rontgenstrahlen 

 verschiedener Wellenlange an Kalkspat und Steinsalz," Annalen der Physik 68 (1922) 

 pp. 369-413. 



