Influence of Hydrogen upon Enzymic Activity. 17 



procain when artificial respiration is employed and the similarity 

 in actions of all of the drugs leads one to suppose that it holds 

 true of the other members of the group. 



11 (1386) 



A bacteriological report of influenza cases at Presbyterian 



Hospital. 



By Miriam Olmstead. 



[From the Presbyterian Hospital, New York City, N. Y.\ 



One hundred forty-five cases have been studied in one or more 

 of the following ways: by naso-pharyngeal cultures, blood cul- 

 tures, sputum for pneumococcus type or lung cultures post- 

 mortem. B. influenzce was found to predominate in the naso- 

 pharyngeal cultures, Pneumococcus III. in the blood cultures and 

 Pneumococcus IV. in sputum and lung cultures. The percentage 

 of naso-pharyngeal cultures containing B. influenzce was somewhat 

 higher among the uncomplicated cases than among the pneu- 

 monia cases. At one period, influenza bacilli were found in 75 

 per cent, of the naso-pharyngeal cultures. The Pneumococcus IV. 

 strains isolated have been found to belong to various groups. 



The blood of influenza convalescents has been found to con- 

 tain agglutinins for strains of influenza bacilli isolated during the 

 recent epidemic. The macroscopic method is used. Incubation 

 at 55° C. gives more satisfactory results than at 37 0 C. 



12 (1387) 



Influence of hydrogen ion concentration upon enzymic activity 

 of three typical amylases. 



By H. C. Sherman, A. W. Thomas and M. E. Baldwin. 



[From the Laboratory of Food Chemistry, Columbia Unhersity, 



New York.] 



Pancreatic and malt amylase and the amylase of Aspergillus 

 oryzce (prepared from taka-diastase) have been selected as repre- 

 sentative of the starch-splitting enzymes of the higher animals, 



