— 13 — 



We determined in our oil the following properties: di 6 o 0,9038; 



a B — 9 15'; n D20 o 1,48132; acid no. 21; ester no. 11,6; soluble 



in 1,5 and more vol. 80 per cent, alcohol, with separation of small 

 crystals of paraffin. 



Cade Oil. It is well known that genuine cade oil {Oleum cadinum, 

 Oleum juniperi empyreumaticum) is derived from Juniperus oxycedrus L., 

 which is chiefly indigenous to the countries of the Mediterranean and 

 the Carpathians. But as the oils examined frequently admitted doubt 

 of their origin, C. Pepin 1 ) has traced some oils obtained from St. Sau- 

 veur, Var and Gard in the South of France, that is to say districts 

 in which the cade oil is actually distilled from Juniperus oxycedrus L. 

 The distillation is there carried on from September to May, and the 

 distillation product is best left standing for 2 to 3 weeks. Of the 

 three layers formed, only the upper one contains the oil which 

 has a less specific gravity than water, and which should possess 

 a brown-red colour and a distinct smoky odour. A simple reaction 

 for distinguishing cade oil from pine tar oils, etc., is the following: 

 1 cc. of the oil to be examined is strongly shaken with 1 5 cc. petro- 

 leum ether and filtered ; 1 o cc. of the filtrate are mixed with an equal 

 volume of a neutral 5 per cent, solution of copper acetate, again shaken, 

 and the mixture left standing for some time; 5 cc. of the layer of 

 petroleum ether are then removed with a siphon, and mixed with 

 double the volume ethyl ether; this mixture acquires an intense green 

 colour if the cade oil is adulterated with pine tar. In the case of 

 genuine cade oil, only a feeble yellow-brown coloration occurs. Accord- 

 ing to Pepin it is possible to detect by means of this reaction, adul- 

 terations with down to io°/ pine tar. 



Cajeput Oil. The normal conditions of this article, to which 

 we could refer in the spring, did not, unfortunately, continue, for a 

 scarcity has during the last few months become noticeable on the 

 European markets, which was bound to find expression in a con- 

 siderable advance in the prices. As will be seen from the table 

 below, no direct shipments to Europe have been made during the 

 first five months, and the exports to Singapore and Java appear to 

 have found their way chiefly to the principal consuming country, the 

 United States. The belief already mentioned before, that the con- 

 sumption in Europe is on the decline, has since been confirmed by 

 further experience. In many cases, where formerly cajeput oil was 

 employed, the cheaper eucalyptus oils, which have a precisely similar 

 action, are now used. 



The shipments from Macassar during the first months are as 

 follows (in cases of 25 bottles each): — 



*) Joura. de Chim. et Pharm. VI. 24 (1906), 49. 



