the data mentioned for Bulgarian rose oil in Gildemeister and Hoff- 

 mann's work "The Volatile Oils" (p. 429); we determined the 



30° 



following limits of value for Bulgarian rose oil: dp^ 0,849 to 0,862, 

 rarely up to 0,863; « D — i°3o' to — 3°; n D25 o 1,452 to 1,464; con- 

 gealing point -\- 19 to -f~ 2 3>5°; acid number 0,5 to 3; ester number 

 8 to 16; total geraniol (geraniol plus citronellol) 66 to 74%, exceptionally 

 up to 76%; citronellol 26 to 37%> generally 30 to 33%- 



The citronellol determination is carried out by formylating; we take 

 for 1 vol. oil 2 vol. 100 per cent, formic acid, and heat the mixture 

 for one hour in a reflux condenser; for the rest the process is the 

 same as in acetylating. 



The alcohol C 10 H 18 O designated by Hesse and Zeitschel 1 ) as 

 nerol, is, according to recent examinations by v. Soden and Treff 2 ), 

 also present in rose oil in the proportion of 5 to 10%. The rose 

 nerol isolated by them corresponds in its properties with that obtained 

 from petitgrain oil. The melting point of the diphenyl urethane 

 lay at 52 to 53 . There was also detected in rose oil i°/ eugenol. 

 Among the primary alcohols separated off with phthalic acid anhydride 

 there was found a compound C 15 H 26 O in the proportion of about 

 i°/ of the rose oil, which appears to be an aliphatic sesquiterpene 

 alcohol, and which may possibly be identic with fames ol discovered 

 by Messrs. Haarmann & Reimer 3 ) in the oils of ambrette-seeds 

 and of cassie blossoms. 



Rosemary Oil, Dalmatian. The drought has damaged the 

 Dalmatian rosemary- districts to such an extent, that it was found 

 necessary to make an allowance in the price to the distillers. According 

 to the consular reports in the German "Handelsarchiv" of June last, 

 p. 534, the rosemary-production increases from year to year. In 1903 

 it amounted to about 17,000 kilos, of which 10,000 were sent to 

 Germany. This year, France may possibly appear as a strong buyer 

 of Dalmatian oil, as in that country the drought has played still greater 

 havoc among the plants than in the Dalmatian islands, and the pro- 

 duction of French oil of rosemary will be as insufficient as that of 

 spike oil. We would advise to make trials in good time, to ascertain 

 whether the former oil is not able to replace spike oil in various in- 

 dustries, particularly in the ceramic industry, for there can be no doubt 

 that it will only be possible to execute a small proportion of the 

 orders for spike oil. 



*) Journ. f. prakt. Chem. II. 66 (1902), 481. 

 2 ) Berl. Berichte 37 (1904), 1094. 

 8 ) German Patent No. 149603. 



