- 8 9 - 



Pharmacie" (9 [1903], 193). It gives us great pleasure to be able to 

 state that our suggestions made at the time have throughout received 

 consideration, so that now we have little to discuss, and can on the 

 whole limit ourselves to a recital of the requirements specified by the 

 pharmacopoeia. The procedure of the Belgian Pharmacopoeia Committee, 

 to submit their draft first to public discussion, appears to us to be 

 well worthy of imitation, for only in this manner is it possible to avoid 

 incorrect requiiements or such as cannot be fulfilled, which are un- 

 fortunately up to the present met with in all pharmacopoeias, and which 

 continually give rise to disagreeable discussions between the reviser, the 

 chemists, and the manufacturers. 



The strength of the alcohol required is between 94,09 and 95 

 per cent, by volume. 



Anethol (Anetholum, essentia anisi) 1 ). White crystalline leaflets; 

 m. p. 22°; b. p. 232 to 234 ; d 2 5o 0,984 to 0,986; «d + o°; sparingly 

 soluble in water, soluble in alcohol. 



*) It would have been better to omit the designation "essentia anisi" for 

 anethol, even if synonymous, as anise oil and anethol are not identical ; in its place, 

 a note at the end of the article might have mentioned that when anise oil is 

 prescribed, anethol should be substituted. The same applies to benzaldehyde, eugenol, 

 eucalyptol, methyl ester of salicylic acid, and thymol. 



Balm Oil {Essentia melissae) 1 ). Colourless or yellowish. 



x ) Compare here what is said under the discussion of the Supplement to the 

 German Pharmacopceia, page 93. 



Benzaldehyde (Aldehyduni benzoicum, essentia amygdalae amarae, 

 essentia laurocerasi) 1 ). Obtained from the oils of bitter almonds or 

 cherry laurel, or synthetically; colourless; di50i,050 to 1,055; a D i°°; 

 b. p. 1 79 ; sparingly soluble in water, soluble in every proportion in alcohol. 

 The freshly prepared aldehyde does not redden litmus paper, but in 

 a short time becomes acid when air is admitted. If 5 g. benzaldehyde 

 are shaken with 45 g. of a saturated solution of sodium bisulphite, and 

 the mixture after adding 60 g. water is heated on the water bath, a 

 clear solution must result. Test for the absence of hydrocyanic acid 

 and nitrobenzene. 



x ) Comp. note under anethol. 



Bergamot Oil [Essentia bergamotti). Brownish yellow or greenish; 

 dj.50 0,88 to 0,89; soluble in spiritus; residue on evaporation about 

 5 to 6 °/ ; content of linalyl acetate (determined after neutralising the 

 free acid) 30 to 45 °/ . 



Camphor [Camphora). White, transparent mass; lighter than 

 water; m. p. 175 ; volatile without weighable residue; very sparingly 

 soluble in water, readily in alcohol, ether, chloroform, fatty and 

 essential oils. 



