196 ffl frs-Mf mtp (0 ^ f- t - f 1: «fc -c 



The following figure was traced in the same manner as figure i. 



Fig. 2. 



^ . 



Minutes 



From the results, I can say that there is a clear distinction between the coagula- 

 tions by acid and by enzym, because this power does not increase by rising tempera- 

 ture as the cnz}'niic action. At the same time, I perceived of tliat acetic acid has 

 not any accelerating power on enzyniic action. 



CONCLUSIONS. 



1) A mucin coagulating enzj^m or mucinase, is found in the tubers of yam and 

 it was distinguished from chj-mase. (The milk coagulating enzym.) 



2) The action of mucinase is accelerated by the presence of calcium chloride, 

 the influence of which is perceived in i/iooddo normal concentration, a distinct in- 

 crease is observable in i/iooo normal concentration. This phenomena was distin- 

 guished from coagulating power of calcium chloride. 



3) There is a clear distinction between the coagulations by acid and by enzym, 

 and acetic acid has no accelerating power on enzymic action. 



Agnciiltnral Chemical Laboratory, 



Tohoku Imperial Uuii'crsity, 



Sapporo Japan, 



