United States Department of Agriculture, 



BUREAU OF CHEMISTRY. Circular No. 23, 



WASHINGTON, D. C. 



WASHINGTON, D. C., March 24, 1905. 



SIR : I desire to submit for your approval a paper on the methods for the 

 examination of maple products, by Mr. Julius Hortvet, associate referee on 

 saccharine products, Association of Official Agricultural Chemists. Credit 

 should also be given to Mr. C. H. Jones, chemist of the Vermont Agricultural 

 Experiment Station, Burlington, Vt., who by his helpful suggestions has been 

 of material assistance to the associate referee in outlining the methods for col- 

 laborative work. These directions were prepared for distribution among those 

 chemists who had indicated their intention to participate in the work planned 

 by the Association of Official Agricultural Chemists for the coming year. Owing 

 to the widespread interest in this matter, however, it was deemed advisable to 

 print a circular which would not only be of service to collaborators in the field 

 but would also meet the requests which are received for information relative to 

 methods for detecting the adulteration of maple products. 

 Respectfully, 



W. D. BIGELOW, 

 Eeferee on Food Adulteration, A. O. A. C., 



Chief, Division of Poods, 

 Dr. H. W. WILEY, 



Chief, Bureau of Chemistry. 



