Examination of Essential Oils. 



19 



rated from the eugenol by distillation. As we desired to examine the 

 oil of cloves in its nsual state, we did not attempt to separate the 

 eugenol by means of alkalies. That portion boiling between 250° and 

 253° was examined after diluting 1,000, 5,000, 10,000, 20,000, and 

 30,000 times. A characteristic absorption, similar to that of otto of 

 pimento, was remarked. (Diagram 17.) 



Oil of Aniseed (Dr. Gladstone). — By far the greater portion of this 

 oil distilled readily between 220° and 223°, and was very easily crystal- 



Diagram 18. 



Oil of aniseed. B.P. 220—223° C. The absorption band is due to anethol, 



Absorption still strong at 300,000. 



lised at a little below 12°. A portion, boiling between 220° and 223°, 

 was examined. Photographs were taken of solutions containing q, 

 loooo) ¥00005 ~5o1y o"o~5 ioo^oo) To 0*0005 3" oVo"o °^ ^ ne The intensity 



C 2 



