28 Report of Schimmel $ Co. April 1913. 



temperature. On the other hand their solidifying point is sharp and can be easily 

 observed. We again point out these facts on the present occasion because the 

 proposal is constantly being made from a certain quarter that in the evaluation of 

 these oils the m. p. and not the solidifying point should be taken as the basis. 



It goes without saying that our anethol is a least equal to the "23°" anethol 

 referred to above. 



Apple Oil. According to a communication by C. Thomas 1 ) the material which 

 he had previously obtained from apple peel by sprinkling with dilute soda solution 

 and extracting with ether 2 ), is not a uniform body, but consists of two fractions with 

 a high and a low m. p. respectively. The first-named fraction has not yet been exa- 

 mined, the latter consists of wax from the peel. The two portions can be separated 

 by repeating the treatment with cold ether, when the waxy substance goes into solution 

 and the body with high m. p. is left behind. 



In another experiment green apple peel, without the addition of soda-solution, 

 was extracted for two days with ether at room-temperature. From the evaporated ether 

 a crystalline substance separated out which was filtered off. When this liquid was 

 afterwards evaporated in vacuo, a dusty mass sublimed out, which melted under the 

 warmth of the hand and had a pleasant odour of apples. At an increased temperature 

 a thick, yellow oil passed over which crystallised immediately. 



Thomas also heated the green peel, without adding water, to 150° in an oil-bath 

 in the vacuum of a water-jet pump, whereby he obtained an aqueous distillate con- 

 taining colourless oil drops with an agreeable perfume. As the temperature increased 

 the liquid began to give an acid reaction. When the oil-bath temperature was at 170 

 to 180° a white sublimate made its appearance. It consisted chiefly of wax and 

 possessed an exquisite odour of flowers. 



Arnica Oils. A series of distillates which we have prepared in the course of 

 the last few years from arnica root and from arnica flowers has given us an opportunity 

 of making further observations with regard to the limits of value of the separate con- 

 stants of these oils. The result was as follows: 



Arnica root oil. d 15 o 0,984 to 1,00; « D -f 0°25' to —2°; n D20O 1,507 to 1,508; acid 

 v. 4 to 10; ester v. 60 to 100; soluble in 7 to 12 vols, of 80 p. c. alcohol and in 0,5 

 to 6 vols, of 90 p. c. alcohol; in both cases possibly with turbidity. 



Arnica flower oil. Butter-like mass, melting to a brownish liquid between 20 to 

 30° (about). d 30O 0,8905 to 0,9029; acid v. 62,6 to 127,3; ester v. 22,7 to 32,2. 



The oil is very sparingly soluble in alcohol; even with absolute alcohol the 

 solutions are only clear in the beginning. 



Oil of Indian Artemisia vulgaris. From the Indian Museum at Calcutta we 

 have received a distillate from Artemisia vulgaris, L. (A. indica, Willd., N. O. Compositce) 

 which had been prepared at Lebong in the District of Darjeeling (Bengal). The oil 

 was described to us as "Indian Wormwood Oil". Its colour was yellowish with a 

 greenish fluorescence and it had an odour of sage: di 5 o 0,9219; « D — 8° 52'; n D20O 1,46201; 

 acid v. 1,2; ester v. 22,1, ester v. after acet. 55,5; sol. in 1 vol. 80 p.c. alcohol. When 

 more than 5 vols, was added, opalescence ensued and after prolonged standing paraffin 

 crystals separated out from the solution. With semicarbazide we succeeded in separa- 



l ) Journ. f. prakt. Chem. II. 87 (1913), 142. — 2 ) Comp. Report October 1911, 21, 



