— 108 — 



manner as has been the case with the previous pharmacopceia dis- 

 cussions. 



Anise Oil {Oleum anisi). M. p. not below -(-15°; soluble in 3 vol. 

 90 per cent, alcohol. 



Cajeput Oil {Oleum cajuputi) 1 ). Cineol-content not below 5O°/ , 

 the determination must be carried out by the phosphoric acid method. 2 ) 



*) The lower limit for the specific gravity of cajeput oil is given too high in 

 the Pharmacopceia, viz., 0,922; it should read: di5° 0,919 to 0,930. 



2 ) We have convinced ourselves that the phosphoric acid method does not give 

 reliable results, and for this reason we cannot recommend it as useful. Comp. 

 Report April 1906, 7 2, Cajeput oil, note 1. 



Caraway Oil [Oleum carui). At least 4O°/ of the oil must pass 

 over above 200 ; «n+74 to -f-78 01 ). 



x ) The rotation of normal oil lies between 70 and 8o°. 



Cinnamon Oil, Ceylon {Oleum cinnamomi). Aldehyde-content 

 at least 68%- 



Clove Oil {Oleum caryophylli). Minimum- content of eugenol 8o°/ ; 

 test for solubility in 70 per cent, alcohol 1 ). 



*) 2 vol. 70 per cent, alcohol are required to make a solution. 



Copaiba Oil {Oleum copaivae). Definite proposals are wanting. 

 Comp. our Report, April 1903, 29. 



Coriander Oil {Oleum coriandri). a^ — 7 to — 14 01 ). 



*) Coriander oil is dextrorotatory, ajy -\- 8 to-f-13 . 



Cubeb Oil {Oleum cubebae). «£> — 30 to — 40 01 ). 

 x ) The lower limit should be fixed at — 25 . 



Dill Oil {Oleum anethi). A minimum - content of 45% carvone 

 should be required, which should be determined by fractional distil- 

 lation 1 ). 



*) For the determination of carvone it is best to employ the sodium sulphite 

 method in the manner proposed by Burgess. For the most suitable way of carrying 

 it out see our Report April 1905, 103. 



Eucalyptus Oil{Oleum eucalypti). Cineol-content not below SS ^ 1 ), 

 the specific gravity should be raised to 0,9 io 2 ). 



*) "With regard to the cineol - determination, comp. Report April 1906, 72, 

 Cajeput oil, note 1. 



2 ) This proposal is inexplicable, as the British Pharmacopceia gives 0,910 as 

 lowest limit of value. 



Peppermint Oil {Oleum menthae piperitae). Excepting Japanese oil, 

 all peppermint oils should be official, and the menthol, both free and 

 combined, determined by the usual processes. 



Pimenta Oil {Oleum pimentae). Eugenol-content at least 65°/ . 



