QUANTITATIVE ANALYSIS 



(27) Hand, D. B., "Determination of riboflavine in milk by photoelectric 

 fluorescence measurements," hid. Eng. Chem., Anal. Ed., II, 306 (1939). 



(28) Kavanagh, F., "New photoelectric fluorimeter and some applications," 

 Ind. Eng. Chem., Anal. Ed., 13, 108 (1941). 



POLAROGRAPHIC ANALYSIS 



(29) Beecher, H. K., Follansbee, R., Murphy, A. J., and Craig, F. N., "Deter- 

 mination of the o.xygen content of small quantities of body fluids by polaro- 

 graphic analysis," J. Biol. Chem., 146, 197 (1942). 



(30) Berggren, S. M., "The oxygen deficit of arterial blood caused by 

 non-ventilating parts of the lung," Acta Physiol. Scand. SuppL, 4, XI (1942). 



(31) Eisenbrand, J., and Picher, H., "t)bcr den polarographischen Nachweis 

 von biologisch vvichtigen Ketonen der Steringruppe," <;. physiol. Chem , 

 260,83 (1939). 



(32) Kolthoff, I. M., "Factors to be considered in quantitative polarog- 

 raphy," Ind. Eng. Chem., Anal. Ed., 14, 195 (1942). 



(33) Kolthoff", I. M., and Lingane, J. J., Polarography. Interscience, New 

 York, 1941. 



(34) Miiller, O. H., The Polarographic Method oj Analysis. J. Chem. Educa- 

 tion, Easton, 1941. 



(35) Sand, H. J. S., Bibliography of the Dropping-Mercury Electrode. Leeds 

 & Northrup, Philadelphia, 1941. 



SPECTROGRAPHIC ANALYSIS 



(36) Cholak, J., and Hubbard, D. M., "Spectrochemical analysis with the 

 air-acetylene flame," Ind. Eng. Chem., Anal. Ed., 16, 728 (1944). 



(37) Churchill, J. R., "Techniques of quantitative spectrographic analysis," 

 Ind. Eng. Chem., Anal. Ed., 16, 653 (1944). 



(38) Ells, V. R., "The Lundegardh flame method of spectrographic analy- 

 sis," J. Optical Soc. Am., 31, 534 (1941). 



(39) Lundegardh, H., Die Quantitative Spektralanalyse der Elemente. Fischer, 

 Jena. Part I, 1929; Part II, 1934. 



MICRO DIFFUSION ANALYSIS 



(40) Borsook, H., "Micromethods for determination of ammonia, urea, and 

 total nitrogen," J. Biol. Chem., 110, 481 (1935). 



(41) Conway, E. J., Micro-diffusion Analysis and Volumetric Error. Van Nos- 

 trand, New York, 1940. 



(42) Winnick, T., "Micro-diffusion methods. Alcohol," Ind. Eng. Chem., 

 Anal. Ed., 14, 523 (1942). "Acetone," J. Biol. Chem., 141,115 (1941). 

 "Lactic acid," ibid., 142, 451 (1942). "Threonine," ibid., 142, 461 (l'M2). 



121 



