166 THE ALUMNI JOURNAL 



nat, showing that these substances in the natural state contain 10.6 

 and 7.3 per cent, of sulphur respectively, and when dried the follow- 

 ing results were obtained (less dry ammonium sulphate in the 



residue) : 



Ichthynat. Tchthyol. 



Per cent. Per cent. 



Sulphur total 12.29 19.59 



Sulphonic 6.59 5.60 



Sulphidic 57° : 3-99 



Ammonia 3.50 2.98 



Ethereal extract 14.55 3 1 - 08 



Substances insoluable in alcohol.... 12.99 44. 1 5 



A distinguished dermatologist has recently said that there is one 

 remedy, copies of which are in most of the Continental Pharmacopoeias, 

 and none of the copies touches the original. 'Were this a generic 

 statement, it would apply with special force to ichthyol, and the con- 

 dition and amount of the sulphur content would alone serve as a 

 point of distinction. In view of the approaching new edition of the 

 British Pharmacopoeia, it is desirable that attention should be given 

 to this point. The British Pharmaceutical Codex, in its description 

 of and tests for ammonium ichthosulphonate, is silent in regard to 

 the necessitv for a sulphur-content standard, but it is not, of course, 

 authoritative, and the omission referred to must not be regarded as 

 being in any way official for Pharmacopoeia purposes. — Chemist and 

 Druggist. Aug. 3, 1912. 



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