29 



of sample* of vinegar of 'known purity. 

 C. H. HICKEY. 



K. M. IIAII.KY. 



Incompl.-t 



* Not analyzed by E. M. Bailey. 



REPORT ON FLAVORING EXTRACTS. 



M. HA. i. Associate Referee. 



port on flavoring extract was submitted by the referee last year, owing to the 

 tuct i hat onl\ a \ery limited amount of work was done, and the report this year includes 

 also the work submitted by collaborators in 1907. 



WORK OF 1907. 



In 1!M)7 the follow in-.;. -um pies were sent to collaborators, with the usual instructions. <* 

 I. Blank containing no lemon oil or citral. 

 Alcohol 1,900 prams, lemon oil 100 grams. 



mon oil used in preparing No. 2. 



No. 4. Alcohol 2,000 grams, vanillin 2 grams, coumarin 2 grams, acetanilid 1 gram. 

 No. 5. Extract prepared from Mexican vanilla beans by the U. S. P. method. 



"The methods f.-r citral were the same as those reported for 1908, see page 32; for 

 vanilla methods see Bui. 107, p. 156. 



