properties of fish and vegetabee oie mixtures. 
195 
The acid numbers are seen to be additive generally for the mixtures, while the 
saponification numbers offer no general behavior. The iodine numbers are additive for 
/}dc/ /Vumlers 
the linseed and soya-bean mixtures, the China-wood mixtures, however, giving a hyper- 
bolic curve. As the iodine number of the linseed is so much higher than that of the 
dogfish-liver oil, this, as is well known, furnishes good evidence of the purity of the former. 
