368 DEDUCTIONS FROM ANALYSIS. 



TABLE CXXXL THE KEICHERT-WOLLNY FIGURE OF BUTTERS. 



Vieth has examined a butter which had been kept more than 

 ten years ; the fat then yielded the following Keichert-Wollny 

 figures 26-2, 25-6, 25-7, and 21-2 c.c. on different portions. 

 He has also examined butter fat which jhad been kept for 

 eighteen months. 



The results were : 



Fresh, . 

 Old, . 



29-2 c.c. 

 30-4 c.c. 



29-9 c.c. 



29-5 c.c. (determined by the author). 



Another example of butter fat well protected from the light 

 gave in July, 1888, from 31-6 to 32-1 c.c. of ~ alkali. In 



October, 1888, 

 January, 1889,. 

 May, 1889, 

 September, 1889, 

 December, 1889, 

 April, 1890, . 

 July, 1893, 



it gave 31*8 c c. 

 32-1 

 32-1 

 31-8 

 32-2 

 32-0 

 33-9 



The last figure was determined by the author; the others by 

 Vieth. 



