C. U. C. p. ALUMNI JOURNAL 



221 



± 



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Conducted by Prof. H. V. Amy. 



GENERAL INFORMATION . 



T. Telephone inquiries will be an- 

 swered cheerfully without charge. Res- 

 idents of Greater New York or vicinity 

 wishing to inquire about some pharma- 

 ceutical problem will ring up the In- 

 formation Bureau, Columbus 117, and 

 will receive information imm,ediately, if 

 same is accessible. 



2. Non-residents will have their prob- 

 lems answered in the next issue of the 

 C. U. C. P. Alumni Journal without 

 cost, if they send their inquiries by mail. 



3. Those not wishing to wait for their 

 information until the next issue of the 

 Journal may have their inquiries an- 

 swered by mail by enclosing a self- 

 addressed stamped envelope. 



4. Problems requiring extended re- 

 search will be handled for a fee as 

 moderate as consistent with high grade 

 service. 



5. Translations of articles from for- 

 eign languages, either in full or in ab- 

 stract, as well as transcripts of papers 

 appearing in English or American phar- 

 maceutical, chemical or botanical periodi- 

 cals will be prepared for those desiring 

 to pay for such service. 



6. As in the past, all visitors to the 

 library, desiring to do their own re- 

 search work, will be given courteous 

 attention. 



H. V. Arny, Librarian. 

 Adelaide Rudolph, Bibliography. 

 Hugo H. Schaefer, Queries. 



ANSWERS TO QUERIES. 



A Dental Disinfectant. — M. J. C, 



Ohio, has asked us how a dental disin- 

 fectant for which he submits a recipe 

 can be made with a clear fluid instead 

 of a milky mixture. His recipe calls 

 for creosote, solution of formaldehyde 

 and glycerin. We will respond by say- 

 ing that in the Druggists Circular for 

 January, 1915, page 26, there was pub- 

 lished a recipe calling for one-half 

 ounce each of beechwood creosote and 

 of 40% formaldehyde solution plus 

 enough alcohol to make a clear fluid 

 The one submitting the recipe stated 

 that five drops of alcohol did the trick. 



We would like to know if M. J. C. 

 finds that a clear solution can be thus 

 obtained. If not, we suggest that he try 

 the use of an alcoholic solution of the 

 now official paraformaldehyde of the 

 proper proportional strength. 



Esbach's Reagent.— M. B. A., New 

 York, will find a recipe for the prepara- 

 tion of this diagnostic fluid on page 206 

 of the C. U. P. Alumni Journal for 

 September. 



Benedict's Solution.— K. P. R., New 

 York. — This is a stable modification of 

 the well-known Fehling copper solution 

 used in the estimation of glucose in 

 urine. According to Merck's Reagen- 

 zien Verzeichniss it is made by dissolv- 

 ing 17.3 grammes crystallized copper 

 sulphate, 173 grammes of sodium citrate 

 and 100 grammes of anhydrous sodium 



