- 167 — 



The oxime of the hydroxydihydrocarvone melted at 114°, whereas 

 that of Wallach had m. p. 133 to 134°; hence it is obvious that there are 

 two isomeric hydroxydihydrocarvones. 



When terpineol nitrosochloride is heated with semicarbazide salt and 

 potassium acetate scarcely any terpineol results, but an abundant quantity 

 is obtained of the 8-hydroxy dihydrocarvone semicarbazone, as well as a 

 slight proportion of hydrazo dicarbimide. 



The action of magnesium upon fo'slimonene nitrosochloride gives rise 

 to carvoxime, hence the only reaction in this case is the elimination of 

 hydrogen chloride. 



Hydrocarbones. 



By subjecting the dried flowers of certain plants to extraction with 

 light petroleum, Klobb, Gamier and Ehrwein 1 ) have succeeded in obtaining 

 from the raw material a yield of from 0,2 to 0,4 °/ of hydrocarbons of 

 the same description as those which pass over when the flowers are 

 distilled by steam. The properties of these hydrocarbons are set forth 

 in the subjoined table: 



Hydrocarbon 



Formula 



Mol. Weight 



M. p. 



Cong, 

 pt. 



Remarks 



from 



found 



calc. 



Arnica montana, L 



Matricaria Chamomilla, L. . 



Antennaria dioica, Gaert. 



(Compositae) 



Artemisia maritima var. 

 Stechrnanni ; "Worm seed" 



Tussilago Farfara, L. (Com- 

 positae) 



C3oH 6 2 



C29H60 

 C28H58 



C32 ^66 



Q7H 56 

 ^28^58 



^30^62 

 ^30^62 



427 



403 

 396 



456 



377 

 399 

 418 

 423 



422 



408 

 394 



450 



380 

 394 

 422 

 422 



62 



52—54 

 64—66 



55-58 



57—59 

 54-56 



57—59 

 64 



65,5 



57,5 

 65 



61 



60 

 60,5 

 64,5 

 65 



Hexagonal leaflets, with 

 mother o'pearl like 

 lustre, from ether or 

 acetone 



Leaflets from acetone 



Leaflets with m-o'pearl- 

 like lustre 



White leaflets from ace- 

 tone. 



Hexagonal leaflets with 



m-o'pearl-like lustre 

 Leaflets 



Leaflets with mother- 

 o'pearl-like lustre, from 

 ether, acetone or 

 benzene and alcohol. 



Tilia europcea, L. (Tiliaceae) 



IAnaria vulgaris,Trag. (Scro- 



phulariaceae) 



Anthemis nolilis, L 



Wallach 2 ) has recently prepared the hydrocarbon A hl '-dicyclohexene 

 (di-J *■ lf -tetrahydrodiphenyl) 



*) Bull. Soc. chim. IV. 7 (1910), 940. 



2 ) Nachr. K. Ges. Wiss. Gottingen 1910, Meeting of 29 th October 1910. 



