— 102 — 



The oil had a minty odour and was of a very dark colour; its constants 

 being as follow: d 22 o 0,9168, sap. v. 150 to 151 (after 40 minutes), 182 

 to 183 (after 90 minutes). The oil was acetylated and then gave sap. v. 

 234,8 to 236,2. 



The author found the saponification-liquor of the original oil to contain 

 formic and salicylic acids, which he identified from the silver-salts. 



The non-saponified oil boiled principally at about 196° and consisted 

 chiefly of thujone. 



Oil of Xanthoxylum ochroxylum. According to a communication 

 by M. Leprince 1 ), the bark of Xanthoxylum ochroxylum, D. C. (N. O. Rutaceas) 

 known in Venezuela as "Bosuga blanca", when treated with light petro- 

 leum, yields 6°/ of an oil possessing a sp. gr. of 0,945 (15°). The oil 

 has a stinging, acrid, astringent taste and a refreshing odour. It cannot 

 be distilled at ordinary temperature and is only saponifiable to a slight 

 extent. The substance is probably a mixture of fatty and essential oil. 



Ylang'Ylang Oil. The supplies of our popular "Sartorius" brand, 

 which holds unquestionably the premier place among the numerous Manila- 

 qualities, have continued to be regular during the past few months, and 

 as the demand likewise left nothing to be desired, no heavy stocks have 

 accumulated at our works. The competition on the part of the cheap 

 Reunion ylang-ylang oils has been but little noticeable, which shows the dif- 

 ference in quality between the two varieties to be so very wide that the 

 considerable difference in price is of no account in this matter. Up to 

 the end of June the shipments of ylang-ylang oil from Reunion amounted 

 to 1510,5 kilos, which is about equal to the shipments in the corresponding 

 period of 1910 (1 560,4 kilos). Lately there has been some fresh talk 

 of ylang-ylang oil distillation in Madagascar and the adjacent islands 2 ), 

 but it would appear that up to the present no one has taken this new 

 industry in hand in a workmanlike way in those islands. 



From the Biological-Agricultural Institute at Amani (German East Africa) 

 we have received four samples of ylang-ylang oil 3 ) which had been prepared 

 on a small scale in the laboratory there. The raw material was the same 

 in all cases, except as regards its condition, one oil having been prepared 

 from fresh flowers, and the other three after the flowers had been kept 

 respectively 24 hours, two days, and four days. The results of our ex- 

 amination are given in the table below: 



a ) Bull. Sciences pharmacol. 18 (1911), 345. 



2 ) Report October 1909, 129. 



3 ) On experiments in the cultivation of the ylang-ylang tree at Amani comp. Report 

 April 1909, 94. 



