April I'. I'.HIS. 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY BULLETIN No. 108. 



H. \V. \Y11.KY. niirf ,,f Bureau. 



COMMERCIAL FEEDING STUFFS 

 OF THE UNITED STATES: 



THEIR CHEMICAL AND MICROSCOPICAL EXAMINATION. 



BY 



J. K. HAYWOOD, 



Chief, Miscellaneous Laboratory, 



AM) 



II. J.WARNER, 



Assistant Chemist, Miscellaneous Laboratory, 



WITH THE COLLABORATION OF 



B. J. HOWARD, 



Chief, Microchemical Laboratory. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1908. 



