[Vor. 8 
96 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Sherman, H. C., and Thomas, A. C. ('15). Studies on amylase. VIII. The 
influence of certain acids and salts upon the activity of malt amylase. Am. 
Chem. Soc., Jour. 37: 623-643. 
—————, and Baldwin, M. E. (19). Influence of H-ion concentration 
upon enzyme activity of three typical amylases. Ibid. 41: 181-235. 
, and Walter, J. A. (17). Influence of certain electrolytes upon bydtoly- 
sis of starch by malt diastase. Ibid. 39: 1476-1493. 
Sörensen, S. P. L. ('09). Enzymstudien II. Biochem. Zeitschr. 21: 131-304. 
1909. . 
Webb, R. W. (19). Studies in the physiology of the fungi. X. Germination of 
the spores of certain fungi in relation to hydrogen-ion concentration. Ann. 
Mo. Bot. Gard. 6: 201-222. 1919 
Wood, R. W. (94). The affinity constants of weak acids and the hydrolysis of 
salts. Am. Chem. Soc., Jour. 16: 313-325. 1894. 
