BULLETIN No. 53. 



U S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF CHEMISTRY. 



CULTURAL 

 LIBRARY, 



I UNIVERSITY 



CHEMICAL COMPOSITION 



ICAUFORNIA. 



OF THE 



CAKCASSES OF PIGS 



BY 



H. W. WILEY, 



CHIEF OF THE DIVISION OF CHEMISTRY. 



WITH THE COLLABORATION OF 



E. E. EWELL, W. H. KRUG, T. C. TRESCOT, 



AND OTHERS. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1898. 



