HISTORY OF LIGHT REFRACTION 



40. Barstow, O. E., "A New Recording Refrac- 



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41. Barnes, R. B., "Refractometer for Chemi- 



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 24, 1946. 



42. Jacobson, S., U. S. Pat. 237',1625, May 20, 



1945. 



43. Stamm, R. F., Mariner, Th., Barnes, R. B., 



AND Stryker, Ch. R., U. S. Patent 258,- 

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44. Clammann, E., "Pneumatic Refractometer," 



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45. Broumberg, E. M., "Une Nouvells Methode 



Pour Rendre la Lumiere Monochroma- 

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46. Merwin, H. E., and Larsen, C. S., "Mix- 



tures of Amorphous Sulfur and Selenium as 

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47. Saylor, Ch. P., "Accuracy of Microscopical 



Methods for Determining Refractive In- 

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48. TsuBOi, S., "A Dispersion Method of Deter- 



mining Plagioclase in Cleavage Flakes," 

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49. TsuBoi, S., "A Dispersion Method of Finding 



the Principal Refractive Index of Crystals 

 in Powders," /. Geol. Soc. Tokio, 32, 1-6 

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50. TsuBOi, S., "A Dispersion Method of Dis- 



criminating Rock Constituents and its Use 

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51. Valasek, J., "Optical Constants of Sub- 



stances Which Exhibit Metallic Reflexion," 

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 56. West, C. D., "Measurement of Refractive 

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53. JoHANNSEN, A., "Manual of Petrographic 



Methods," p. 238. McGraw-Hill, N. Y., 

 1914. 



54. WiNCHELL, N. H., AND WiNCHELL, A. N. W., 



"Elements of Optical Mineralogy," p. 69, 

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55. Ollivier, H., "Cours de Physique Gen6- 



rale," p. 252, Hermann, Paris, 1923. 



56. Wright, F. E., "The Methods of Petro- 



graphic Microscopic Research," Carnegie 

 Inst. Wash. Publ., 158, 95 (1915). 



57. Wright, F. E., "Measurement of the Re- 



fractive Index of a Drop of Liquid," J. 

 Wash. Acad. Sci., 4, 269-279 (1914). 



58. Chamot, E. M., AND Mason, C. W., "Hand- 



book of Chemical Microscopy," Vol. 1, 2nd 

 Ed. p. 358. J. Wiley & Sons,"N. Y., 1938. 



59. Martin, L. C.,, "Optical Measuring Instru- 



ments," p. 164, Blackie & Sons, Phila., 

 1924. 



60. Wood, R. G., and Ayliffe, A., "Method of 



Analyzing Small Crystals for Optical Prop- 

 erties," J. Sci. Instr., 12, 299 (1925); Phil. 

 Mag., 21, 321 (1936). 



61. Wood, R. G., Ayliffe, A., and Williams, 



G., "Method of Analyzing Small Crystals 

 for Optical Properties," Proc. Roy. Soc. 

 London, A-177, 140 (1940-41). 



62. KiENLE, R. H., AND Stearns, E. I., "Adapta- 



tion of Automatic Spectrophotometer for 

 Special Measurements," Instr., 20(11), 

 1057-1063 (1947). 



63. Addey, F., "A Note on the Measurement of 



the Vertical Dimensions by Use of the 

 Graduated Fine Adjustment of the Micro- 

 scope," /. Qekett Micros. Club (2), 14, 279 

 (1922). 



64. Benedetti-Pichler, A. A., and Spikes, W. 



F., "Introduction to the Microtechniques 

 of Inorganic Qualitative Analysis," Doug- 

 laston, N. Y., 1935. 



65. Blunk, G., "Quantitative Bestimmung 



Physikalische Chemischer Eigenschaften 

 Mikroscopish Keiner Mengen," Zeitschr. 

 wiss. Mikros., 37, 138-40 (1920). 



66. Eversmann, Th., "Bemerkung zur Mittel- 



baren Langennessung mit Distanz faden 

 nach Reichenbach," Zeitschr. f. Instr., 52, 

 525-528 (1932). 



67. Kirk, P. L., and Gibson, C. S., "Refractive 



Index Measurements in Qualitative Or- 

 ganic Microanalysis," Ind. Eng. Chem. 

 Anal.Ed.,ll,\^'i (1939). 



68. Reimers, F., "Investigations of Microchemi- 



cal Methods. IV Identification by Means of 

 Microdetermination of Refraction," Z)ans^-. 

 Tids. Farm., 15, 81-99 (1941). 



69. Kegeles, G., Costing, L. J., Hansen, E. M., 



AND Morris, M., "Equipment and Experi- 

 mental Methods for Interference Diffusion 

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 215 (1949). 



70. Thovert, — ., Ann. Chim. Phijs., 2(9), 369 



(1915). 



71. Zuber, R., Z.Physik., 79, 280-290 (1932). 



72. Longsworth, L. G., "Optical Methods in 



Electrophoresis," Ind. Eng. Chem. Anal. 

 Ed., 18, 249-269 (1946). 



73. Debye, p., "A Photoelectric Instrument for 



Light Scattering Measurements and a Dif- 



499 



