ALTERATION OF BUTTER ON KEEPING. 



367 



Allen and Moor have examined two samples of butter which 

 had been kept for five and a half years. The following table 

 gives their results : 



TABLE CXXIX. 



Clayton has analysed a butter which in 1879 gave in Hehner's 

 hands 87-75 per cent, of insoluble fatty acids. His results 

 were : 



TABLE CXXX. 



Besana has examined twenty samples after keeping for various 

 periods of time : he estimated the Reichert-Wollny figure (Table 

 CXXXL). 



* This figure was determined by the author on a duplicate sample. 



