502 BIBLIOGRAPHY 



Volk, B. W., and Popper, H. (1944a). Factors influencing the persistence of 

 vitamin A fluorescence in tissue sections. Arch. Path., 38: 90-92. 



Volk, B. W., and Popper, H. (1944b). Microscopic demonstration of fat in 

 urine and stool by means of fluorescence microscopy. Am. J. Clin. Path., 

 14: 234-238. 



Wachstein, M., and Zak, F. G. (1946). Bismuth pigmentation. Its histo- 

 chemical identification. Am. J. Path., 22: 603-611. 



Waldschmidt-Leitz, E. (1925). Zur Kenntnis der Enterokinase. Z. physiol. 

 Cheyn., 142: 217-244. 



Walker, A. M. (1933). Quantitative studies of the composition of glomerular 

 urine. X. The concentration of inorganic phosphate in glomerular urine 

 from frogs and Necturi determined by an ultramicromodification of the 

 Bell-Doisy method. J. Biol. Chem., 101: 239-254. 



Walker, A. M., and Hudson, C. L. (1937). The role of the tubule in the 

 excretion of urea by the amphibian kidney. With an improved technique 

 for the ultramicro-determination of urea nitrogen. Am,. J. Physiol., 118: 

 153-166. 



Walker, A. M., and Reisinger, J. A. (1933). Quantitative studies of the com- 

 position of glomerular urine. IX. The concentration of reducing sub- 

 stances in glomerular urine from frogs and Necturi determined by an 

 ultramicroadaptation of the method of Sumner. J. Biol. Chem., 101: 

 223-237. 



Warburg, 0. (1910). tJber Beeinflussung der Sauerstoffatmung. Z. physiol. 

 Chem., 70: 413^32. 



Waterhouse, D. F. (1945). Studies of the physiology and toxicology of blow- 

 flies. A histochemical examination of the distribution of copper in 

 Lucillia cwprina. Council for Scientific and Industrial Research, Common- 

 wealth of Australia, Melbourne, Bull. No. 191, 20 pp. 



Weil, L. (1936). Investigations in enzymatic histochemistrj^. II. A micro-method 

 for the determination of tryptic activity. Biochem. J., 30: 5-10. 



Weil, L., and Russell, M. A. (1940). Studies on plasma phosphatase activity in 

 relation to fat metabolism in rats. J. Biol. Chem., 136: 9-23. 



Westenbrink, H. G. K. (1940). Determination of cocarboxylase and aneurin. 

 A micro-modification of Ochoa and Peter's method. Com,pt. rend. trav. 

 lab. Carlsberg, Ser. chim., 23: 195-211; Enzymologia, 8: 97-107. 



Westfall, B. B., Findley, T., and Richards, A. N. (1934). Quantitative studies 

 of the composition of glomerular urine. XII. The concentration of chloride 

 in glomerular urine of frogs and Necturi. J. Biol. Chem., 107: 661-672. 



Whitaker, T. W. (1939). The use of the Feulgen technic with certain plant 

 materials. Stain Tcchnol., 14: 13-16. 



Widmark, E. M. P., and Orskov, S. L. (1928). Eine neue Mikrobiirette. 

 Biochem. Z., 201: 15-21. 



Wigglesworth, V. B. (1937). A simple method of volumetric analysis for small 

 quantities of fluid: Estimation of chloride in 0.3 /il. of tissue fluid. 

 Biochem. J., 31 : 1719-1722. 



Williams, P. S., and Scott, G. H. (1935a). An electrode arrangement for spark 

 spectrography. Rev. Sci. Instruments, 6: 277-278, 361. 



