D. D. VAN SLYKE 



(13) Dixon, M., Manometric Methods. Cambridge Univ. Press, London, 

 1934. 



(14) Hoagland, C. L., "Microdetermination of sulfate and phosphate by 

 manometric combustion of their organic precipitates," J. Biol. Chem., 136, 

 543 (1940). "Micro manometric determination of magnesium," ibid., 553. 



(15) Summerson, W. H., "A combination simple manometer and constant 

 differential manometer for studies in metabolism," J. Biol. Chem., 131, 579 

 (1939). 



(16) Van Slyke, D. D., Dillon, R. T., MacFadyen, D. A., and Hamil- 

 ton, P. B., "Gasometric determination of carboxyl groups in free amino 

 acids," J. Biol. Chem., 141,627 (1941). Hamilton, P. B., and Van Slyke, 

 D. D., "The gasometric determination of free amino acids in blood filtrates 

 by the ninhydrin-carbon dioxide method," tZ»2a?., 150,231 (1943). 



(17) Van Slyke, D. D., and Folch, J., "Manometric carbon determina- 

 tion," J. Biol. Chem., 136, 509 (1940). 



(18) Van Slyke, D. D., and Neill, J. M., "The determination of gases in 

 blood and other solutions by vacuum extraction and manometric meas- 

 urement," J. Biol. Chem., 61, 523 (1924); 83, 449 (1929). "Applications to 

 other analyses," in Peters, J. P., and Van Slyke, D. D., Quantitative Clinical 

 Chemistry. Methods. Williams & Wilkins, Baltimore, 1932; rev., 1943. 



(19) Warburg, O., "Verbesserte Methode zur Messung der Atmung und 

 Glykolyse," Biochem. Z-, 152, 51 (1924). 



PHOTOMETRIC ANALYSIS 



(20) Ashley, S. E. Q., "Spectrophotometric methods in modern analytical 

 chemistry," Ind. Eng. Chem., Anal. Ed., 11, 72 (1939). 



(21) Folin, O., and Wu, H., "A system of blood analysis," J. Biol. Chem., 

 38, 81 (1919). 



(22) Hamilton, R. H., "Photoelectric photometry. An analysis of errors 

 at high and low absorption," Ind. Eng. Chem., Anal. Ed., 16, 123 (1944). 



(23) Miiller, Ralph H., "Photoelectric methods in analytical chemistry," Ind. 

 Eng. Chem., Anal. Ed., 7, 223 (1935); 11, 1 (1939). 



(24) Richards, A. N., Bordley, J., 3rd, and Walker, A. M., J. Biol. Chem., 

 101, 179, 193, 223, 229 (1933). 



(25) Snell, F. D., and Snell, C. T., Colorimetric Methods oj Analysis, including 

 Some Turbidimetric and Nephelometric Methods. 2nd ed., 2 vols., Van Nos- 

 trand, New York, 1936-1937. 



FLUORIMETRIG ANALYSIS 



(26) Brodie, B. B., and Udenfriend, S., "The estimation of atabrine in bio- 

 logical fluids," J. Biol. Chem., 151, 299 (1943). 



I20 



