— 100 — 



as with palmarosa oil and other substitutes, and in all these cases ex- 

 tracting the oil with water proved to be an excellent means of detecting 

 the sophistication 1 ). 



Original Oil 



Oil extracted with water 





d30O 



n D25P 



Sol. pt. 



U30O 



n D250 



Sol. p. 



Geraniol 

 content 



1. 



0,8597 



1,46318 



19,6° 



0,8614 



1,46628 



18,7° 



77,4% 



2. 



0,8547 



1,45111 



20,2° 



0,8622 



1,46615 



17,5° 



68,1 °/o 



3. 



0,8663 



1,46565 



26° 



0,8678 



1,46684 



26,5° 



77,5% 



Of the above oils, No. 1 probably contained in addition to alcohol, 

 palmarosa oil or some adulterant of that kind, as was to be concluded 

 from the high geraniol content of the oil after removal of the alcohol. 

 No. 2 was found to contain not less than about 20°/ alcohol, while No. 3 

 was not only adulterated with palmarosa oil and alcohol, but also with 

 spermaceti, in order to correct the stearoptene-content. It is true that the 

 latter, estimated by the familiar method 2 ), was normal, showing 17,4%, (two 

 pure oils used for purposes of comparison contained 17,4% and 18,8% 

 respectively), but the sap. v. of the isolated stearoptene was 75,5 as com- 

 pared with only 1 to 4 in the stearoptenes from pure oils, thus showing 

 the presence of spermaceti to be extremely probable. 



Rosemary Oil. The producers in the departments of the Gard, Aude 

 and Herault have been severely disappointed at the pecuniary results of 

 the distillation, and the view is often heard expressed that the French 

 rosemary oil industry will be unable to withstand permanently the com- 

 petition of the Spanish oil. It must, in fact, be admitted that the market 

 has been literally flooded with Spanish oil, and although at times the 

 supplies were adulterated to such an extent that the oil was hardly 

 recognisable, there were nevertheless unfortunately numerous buyers of 

 such oil, so that this sort of competition exercised a sensible pressure 

 upon the market-prices. We have met with only a few parcels of Spanish 

 rosemary oil of really unimpeachable quality. The demand for Dalmatian 

 oil has continued to move within moderate limits, and the quotations of 

 this oil in the producing districts will soon require to be materially reduced 

 if a total cessation of the business is to be prevented. Since the oil has 

 ceased to be used as a denaturing agent in Germany, the sale of the 

 Dalmatian variety has of course suffered very considerably. 



H. J. Henderson 3 ), had already previously called attention to the fact 

 that the common experience, which regards English rosemary oil as being 



J ) Comp. Report November 1908, 104; April 1910, 93. 



*) Comp. Gildemeister and Hoffmann, The Volatile Oils, 1 ed., p. 435. 



3 ) Pharmaceutical Journ. 79 (1907), 559; Report April 1908, 88. 



