distillation more than half the oil must pass over between 165 and 

 1 75 , the remainder, with the exception of a slight resinous residue, 

 between 190 and 205 ; from the latter distillate camphor crystals 

 frequently separate off when it is cooled. 



*) The pharmacopoeia specifies the above rotation for a tube of 200 mm., but 

 this is incorrect and is clearly due to an oversight. Pure rosemary oil rotates in 

 a 100 mm. tube up to -f- 15 . 



Sandalwood Oil, East Indian [Oleum santali). Yellowish; 

 045° 0,975 to 0,985; « D — 17 1 ) to — 20 ; soluble in 2 vol. spiritus 

 and in 5 vol. spiritus dilutus 2 ); santalol-content at least 92,5°/ 3 ); sandal 

 oil must not contain portions boiling below 290 , the bulk of the oil 

 passes over above 300 . 



v ) Sometimes, although rarely, these oils rotate somewhat lower. Comp. Report 

 October 1905, 64. 



2 ) The statements on the solubility in spiritus dilutus apply to 20°; at an ob- 

 servation temperature of 15 most sandal oils would not pass the test. 



3 ) The pharmacopoeia bases the calculation on the old formula C 15 H2eO. 

 Calculated for the formula C |5 H24 which according to our present knowledge is 

 more correct, the lowest content of santalol is 9i,7°/ . 



Terpin Hydrate [Hydras terpini). Colourless crystals; m. p. 11 6°; 

 soluble in 230 parts water and 12,8 parts spiritus, the solutions are 

 neutral; when dried at iocT it is converted into terpin which melts 

 at 102 ; 1 g, should leave behind not more than 3 mg. ashes; identity 

 reactions. 



Thymol (Thymolum). Colourless crystals; m. p. 49 to 50 01 ); 

 b. p. 232 to 2 3 4 ; solid thymol sinks in water, liquid thymol floats 

 on it; soluble in 11 75 parts water, in 0,4 parts spiritus, readily in 

 chloroform and in ether, the solutions must have a neutral reaction; 

 0,1 g. thymol must volatilise on the water-bath without weighable 

 residue; identity reactions and test for phenol. 



*) Thymol melts between 50 and 51 . 



Turpentine Oil, American ( Oleum terebinthinae). Almost colourless, 

 not fluorescent; di 5 o 0,860 to 0,890; «p — 3 to — |— 15 ; mostly between 

 ~\- 10 and -{- 1 4 ; at least 9O°/ of the oil must pass over between 

 155 and 165 ; soluble in 8 vol. spiritus. 



Turpentine Oil, rectified (Oleum terebinthinae depuratum). Colour- 

 less; d 15 o 0,860 to 0,872; boiling temperature 155 to 165 , soluble 

 in an equal vol. glacial acetic acid and in 6 vol. spiritus, the spirituous 

 solution must not redden litmus paper. 



Belgian Pharmacopoeia. 



(Pharmacopoeia Belgica ed. III.) 



The articles of the new Belgian Pharmacopoeia which are of interest 



to us have already been discussed in our October Report 1903 (p. 71) 



when the draft pharmacopoeia had appeared in the "Annales de 



