1136 



off on two consecutive dajs might not have been absolutely equal, 

 the author made a new set of experiments, in which only the two 

 series of the same day were combined. (Table 3). 

 From this table was calculated : 



TABLE 4. 



The measurement for 90 minutes contains, as will be seen in the 

 m-column of table 3 a comparatively large experimental error. 

 Therefore the values, calculated with the aid of this estimation have 

 been discarded from table 4. 



Since of the many experiments of this kind that the author has carried 

 out, this series was the most sucessful one, as to regularity, and in 

 view of the smallness of the numbers, which had to be determined 

 by titration, had given also a perfectly satisfactory result, the final 



value of 



was taken to be 0,0302. 



0,434 

 From this it follows, that 



n = 0,043 X 10' 

 which value is used throughout in the course of this study and is 

 confirmed indirectly by the important numerical relations, which will 

 be developed with the aid of it in the following parts. 



4. Experimental veri/ication of the general equation of urease- 

 action. 



Activity of enzipne dependent on true reaction of the solution. 



Experimental evidence will be brought forward in this part to 

 show, that the formula 



0,434 



loq 



1 



y 



-^ ay =z mt 



