184 



Journal of the Asiatic Society of Bengal. [April, 1910. 



Description of butter-fat. 



- 



New value. 



Reichert-Wollny 

 figure. 



Fresh buffalo butter-fat (17-1-07; 



• 



European cow (Kirschner) 



25 



26-8 



* 



. 



30-5 32*3 



29-6. 



It was felt, however, that much confidence could not be 

 attached to the results obtained by these latter processes, and 

 other chemists who have used these processes have arrived at 

 similar results (Annual Report on Progress of Chemistry, 

 Chemical Society, 1906, p. 217). 



As already stated this further investigation has shown 

 beyond doubt that the relative proportions of the volatile fatty 

 acids are the same in the butter-fats of the Indian buffalo and 

 the European cow. Up to the present, therefore, no method 

 is available for distinguishing between cow-ghee and a mixture 

 of buffalo-ghee and a suitable quantity of some other oil or fat, 

 such as beef or mutton-fat. 



Experimental data corresponding to the Curves. 



m 



Curve No. 1 (Diag. 1). 



Caproic Acid alone. 



acid was 



550 



50 



were distilled over in 



Fraction No 



Titration value 

 (in terms of NaOH 



* x 0-947). 



1 



2 

 3 

 4 

 5 

 6 



7 

 8 

 9 



10 



291 

 22-9 



153 



11-5 



5-3 

 3-5 



17 

 0-9 



o-.-. 



0-3 



Titra t ion value in 

 new units. 



Ordinate value 

 for the curve. 



320 



J5-2 



16-8 



126 



58 



3-8 



1-8 



10 

 0-6 

 04 



32-0 

 572 

 740 

 86-6 

 92-4 

 964 

 98-0 

 99-0 

 99-6 

 100 



To obtain the figures in the third column the titration 

 values are multiplied by such a factor that the total titration 

 value of the ten fractions is now expressed by 100. The 

 figures in the fourth column are obtained from those in the 



