U. S. DEPARTMENT OF AGRICULTURE 



DIVISION OP CHEMISTRY. 

 BULLETIN No. 13 



FOODS 



AND 



FOOD ADULTERANTS 



15Y DIRECTION OF 



THE COMMISSIONER OF AGRICULTURE. 



PART FIRST: 



DAIRY PRODUCTS. 



WASHINGTON: 



PRINTING OFFICE. 

 1887. 

 19330 No. 13 



