— 48 — 



light petroleum, while it was insoluble in its own vol. of warm alcohol. 

 Its acid value was lower and its saponification value higher than that of 

 pure oil, and it contained only about 3°/o of non-saponifiable matter as 

 compared with about 20°/o in pure oil, while its glycerol content was 

 six times that of pure oil. The saponaceous matter yielded by it made 

 a clear solution with water after evaporation of the alcohol: with pure 

 oil the solution was turbid. The fatty acids contained a smaller proportion 

 of volatile and a larger proportion of solid constituents than is the case 

 with pure oil. They were crystalline, pale brown and opaque, as compared 

 with the dark-brown, wax-like and transparent fatty acids of pure oil. 



For purposes of comparison we admixed 7% cotton oil to a sample 

 of sweet orange oil, and we record below the comparative analytical values 

 of the two samples: — 





c wppt After addition 

 ^weet Qf ? ,y o 



orange oil 1 cotton oil 



Sample of oil 

 under exam. 



diso 



0,8498 



0,8549 



0,8555 





a 



+ 97° 2' 



+ 90°46 f 



H-92°24' 



D20O 





« D of the initial 10°/o . . 



+ 96°50 r 



+ 96°14' 



+ 98° 4' 



Evap.-residue 



2,7°/o 



9,8% 



9,5°/o 



Sap. v. of evap.-residue 



149,4 



182,9 



171,4 



The colour of the sample under examination was in our opinion rather 

 paler than that of pure sweet orange oil, and as the evaporation-residue 

 of pure oil is at most 4%, and it followed that about 5V 2 °/o of fatty sub- 

 stance had been added, we were forced to pronounce the oil as sophisticated, 

 particularly so because, when allowance is made in the constants of the 

 oil for the percentage of fatty matter referred to above, the constants of 

 the sample would agree in every respect with those of sweet orange oil. 



By analysis we identified as such the fat contained in the oil without 

 a shadow of doubt, and no one can doubt that the addition of 5 1 /-2 jo of 

 an adulterant means a pecuniary benefit. For the rest it is quite immaterial 

 for purposes of a verdict whether the addition is intentional or accidental; 

 in any case the fact remains that the oil under examination contained 

 several per cent, of fatty matter which has nothing to do with it. 



Estragon Oil. Owing to the drought, our own fields have only yielded 

 small quantities, which are hardly likely to be sufficient to cover the 

 requirements until next summer. Consumers will have to prepare them- 

 selves for higher prices. 



