422 ODOEOGRAPHIA. 



Cassia oil of excellent quality has lately been distilled in Japan. 

 Its sp. gr. has been determined as 1-059 at 15^ C, and the 

 aldehyde content 86 per cent. 



Vol. L, v. 101. 



Mignonette. Messrs. Schimrnel & Co. have been the first to 

 succeed in extracting the essential oil of this flower, and now 

 state* that they prepare it upon an extensive scale at their factory 

 near Leipzig. The oil occurs in a condition of firm consistency, 

 similar to that of oil of orris. It is obtained by distillation at the 

 lowest possible temperature from freshly-gathered mignonette 

 flowers, and reproduces the lovely perfume of the mignonette in 

 its full natural excellence ; whereas it is notorious that the odour 

 of this particular flower can only be communicated to fat by the 

 maceration process in a very imperfect manner. 



The yield of essential oil from Mignonette flowers is only 0*002 

 per cent. 



Oil of mignonette is very economical in use, and on that account 

 can be used in high-class perfumery, notwithstanding the enormous 

 cost of its production. It gives a clear solution, with large 

 quantities of alcohol. The oil is recommended to be used in the 

 proportion of 1 part (by weight) to 500 parts of alcohol, and this 

 solution employed for the composition of or addition to mignonette 

 extract.f 



Vol. L, p. 22. 



Rose. Consular Report Xo. 1300 states that owing to 

 initimely rains just before the rose harvest, the 1892 yield of otto 



* Bericht, Oct., 1893. 



f Messrs. S. & Co. have discovered that the fresh root of the mignonette 

 contains an essential oil (the yield heing 0-035%). The only relationship 

 between this very curious oil and that obtained from the flowers is that both 

 are derived from the same plant. As regards aroma they are almost at opposite 

 poles, the root-oil possessing a strongly-marked radish odour. By a pre- 

 liminary examination, Messrs. S. & Co. have determined the existence of 

 sulphur in this oil. Contrary to mustard oil, this oil exists in the root as a 

 separate and definite body. After drying, the root is odourless and tasteless. 

 The sp. gr. of the oil is r085 at 15° C, and its optical rotation -|-1°30' in a IvOO 

 m. m. tube (Bericht., Oct., 1893). 



