[Vol. 10 1923] 



298 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Wolf, C. G. L. ('22). The mechanism of the reversal in reaction of a medium 



which takes place during growth of B. diphtheriae. Biochem. Jour. 16: 541- 



547. 1022. 



Wolf, E. A., and Shunk, I. V. ('21). Tolerance to acid of certain bacterial plant 



pathogens. Phytopath 11: 244-250. 1921. 

 Wohlk, A. ('02). t)ber die Einwirkung von Brom und Kalium permanganat auf 



Citronensaure (Stahre's Reaction) und den Nachweis von Citronensaure in 



Milch. Zeitschr. f. analyt. Chem. 41: 77-100. 1902. 

 Yoder, P. A. ('11). Notes on the determination of acid in sugar cane juice. Jour. 



Ind. and Eng. Chem. 3: 640-646. 1911. 

 . ('11a). A polariscopic method for the determination of malic acid 



and its application in cane and maple products. Ibid. 3: 563-574. 1911. 



Explanation of Plate 



PLATE 14 



Carbon analysis equipment (see page 237) 



t 



