13 



■zjrigiaa 



«D 



wma.: 

 Acid no. 



Ester no. 



Sap. no. 



Sap. no. 

 after acetylation 



24° 48' 



1,2 



3i>8 



33.0 - 



— 



25 10' 



3>o 



45>° 



48,0 



143 



23 40' 



2,0 



35.o 



37.0 



139 



Sap. no. 

 14,0 

 18,3 

 26,0 



Sap. no. 

 after acetylation 



Il6 



of 1905 1 ), has continued the chemical examinations of the oils then 

 described. 2 ) 



1. Oil of Arte ' 

 distilled Spec. grav. 



1904 0,927 



1904 0,931 



1905 0,933 

 The oils formed clear solutions with 0,5 vol. and more 90 per cent. 



alcohol, and had a distinct odour of cineol, which could be determined 

 qualitatively by the phosphoric acid reaction. 



2. Oil of Artemisia leudoviciana Nutt. : — 

 distilled Spec. grav. a D Acid no. Ester no. 



1904 0,929 — l6° 14' 4,0 10,0 



1904 0,930 — 13°32' 4,3 14,0 



1905 0,931 — 1 7 20' 0,0 26,0 

 The oil dissolved in 0,5 vol. and more 90 per cent, alcohol, and 



with phosphoric acid gave the cineol-reaction. 



3. Oil of Artemisia caudata Michx.: — Sap.no. 



after acetylation 

 not determined 



owing to 

 insufficient 

 material 



The odour of the oil (which with 2 vol. and more 90 per cent, 

 alcohol formed a cloudy solution) was at first sweetish, and gradually 

 became lemon-like. 



For the purpose of comparison we quote here the constants of 

 two oils which we examined ourselves some time ago. 3 ) 



1. Oil of Artemisia variabilis Ten.: d^o 0,9115; «d — 9 20'; 

 acid no. 1,7; sap. no. 15,5°; sap. no. after acetylation 49,1; incom- 

 pletely soluble in alcohol (even in absolute alcohol); the solution which 

 is at first clear, becomes cloudy when 10 to 12 vol. are added. 



2. Oil of Artemisia annua L. : yield of oil from the green herb 

 cultivated by ourselves, o,2g°/ ; diso 0,8912; « D — i° 18'; acid no. 3,8; 

 ester no. 19,2; ester no. after acetylation 44,5; soluble in 1 to 1,5 vol. 

 80 per cent, alcohol; when more solvent is added cloudiness occurs 

 owing to separation of paraffin. 



Basil Oil. The regrettable state of affairs of this oil unfortunately 

 continues, as the present producing districts, and particularly Reunion, 



istilled 



Spec. grav. 



«D 



Acid no. 



Ester no. 



Sap.no. 



1904 



0,920 



— 12° 30' 



0,0 



17,0 



17,0 



1904 



0,887 



inactive 



20,0 



73>o 



93>o 



I905 



0,8418 



— 24°20 ; 



0,0 



29,0 



29,0 



*) Pharm. Review 23 (1905), 128; Report October 1905, 

 Reports April 1902, 77) October 1904, 13; April 1905, 85. 



2 ) Pharm. Review 24 (1906), 324. 



3 ) Reports April 1902, 77 and April 1905, 85. 



comp. 



also 



