56 



Kansas Academy of Science. 



Determinations according to the above methods were made daily 

 up to and including the tenth day, then on the thirteenth day, and 

 again on the sixteenth day. 



The results of these direct determinations are given in table I. 

 In table II the figures given are calculated from those in table I. 

 From the percentage of calcium thiosulfate the percentage of cal- 

 cium so combined is calculated. These figures are given in the 

 second column. 



Table I. 



Not determined. 



Table II. 



