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C. U. C. p. ALUMNI JOURNAL 



Emulsion of Iodoform and Glycerin. 



— P. H., New York. — While we have 

 been unable to find a recipe bearing that 

 specific name, the following recipe for 

 an emulsion of iodoform containing 

 glycerin may be what you want. It is 

 taken from Martindale and Westcott's 

 Extra Pharmacopoeia, where it is stated 

 that it is used for injection into sinues. 



Finely powdered iodoform i part 

 Glycerin 7 parts 



Boiled water 2 parts 



Mix well in the order named. 



In the Guy's Hospital Pharmacopoeia 

 it is suggested that the iodoform be 

 moistened with 90% alcohol prior to 

 mixing with the glycerin. 



Dakin's Solution.— P. H.. New York. 

 — This in an antiseptic preparation 

 suggested by Dr. H. D. Dakin of New 

 York, made by the following recipe : 



Dissolve 140 grammes of dried sodium 

 carbonate (or 400 grammes of the 

 dekahydrated carbonate) in 10 liters of 

 water and then add 200 grammes of 

 chlorinated lime. After one-half hour 

 of standing, syphon ofif the clear liquid, 

 filter it if necessary and then add to the 

 filtrate 40 grammes of boric acid. 



For details, see the Chemist and Drug- 

 gist for September 4th, 1915, page 342, 

 where a recipe for a stronger solution is 

 also given. 



Legal Queries. — During the month 

 we have answered a number of queries 

 relating to pharmacy laws, local, state, 

 and national, emphasizing each time that 

 the information given was merely the 

 personal opinion of a layman. For this 

 reason we do not print such answers, 

 since in serious legal matters a lawyer 

 should be consulted. 



Soluble Essence of Ginger. — B. W. 

 H., New York. — The principle of solu- 

 ble essence of ginger has been carefully 

 studied by Dr. J. C. Thresh, who found 

 that the real pungency of ginger root is 

 not found in the resins but in an alcohol 

 gingerol. While the resins are insoluble 

 in diluted alcohol, the gingerol can be 

 dissolved in that fluid. The procedure 

 recommended by Thresh was to mix a 

 strong tincture of ginger (menstruum, 

 95 per cent, alcohol) with slaked lime 

 (which removes the two chief resins), 

 then to dilute with an equal volume of 

 diluted alcohol, then to precipitate the 

 excess of lime with diluted sulphuric 

 acid ; then to macerate for 24 hours ; 

 then to dilute with an equal volume of 

 water; and lastly to filter through 

 powdered pumice. 



"Pharmaceutical Formulas" (from 

 which the foregoing information is com- 

 piled) suggests the simpler method of 

 diluting a strong alcoholic tincture with 

 its own bulk of water, then adding the 

 slaked lime, then macerating for 24 

 hours, then filtering, washing the filter 

 with diluted alcohol. Lastly, filter again 

 through sand or pumice. 



The resulting product is miscible with 

 syrup to a clear fluid. At times, the 

 originally clear "soluble extract" deposits 

 resinous matter on standing for some 

 months, due undoubtedly to the oxidation 

 of the gingerol. We wonder whether 

 this oxidation could be prevented by add- 

 ing a little glucose to the product (in 

 place of some of the water) prior to the 

 final filtration? 



Names of Manufacturers. — We glad- 

 ly furnish our querists with information 

 concerning the manufacturers of goods 

 handled by the drug trade, but for 

 obvious reasons, such answers are not 

 published in this department. 



