70 



at a definite high temperatuse, viz. by extrapolation from 

 the time-curvL'S, which represent the intenaity ol ihe 

 process after 1, 2, 3 and more hours; by this extrapolation 

 the value after a time zéro should be obtained (cf. § 1). 



In this section "we will trace how far Blackman's 

 views upon the subject are confirmed by the results of 

 this investigation. To this end we enquire in the first 

 place whether the harmful influence ofhigher températures 

 has made itself felt as a time-function or not. The results 

 at 80° C. we disregard for the présent. 



The time-curves in the case of 35° C. and 37° C. (plate 

 III and V) are indeed comparable with Blackman's 

 diagram as rendered in fig. 1. Of course it must be kept 

 in vieW that Blackman's curves descend and hère the 

 curves ascend (cf. what was said in § 12). The figures of 

 importance in this respect are the values found between 

 35° C. and 39° C, therefore I reprint them hère (cf. the 

 table in § 9). 



This table does not at ail show a regular increase of 

 the presentation-time which could be represented by 



