LETTER OF TRANSMITTAL 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY, 

 Washington, D. C., July 15, 1908. 



SIR: I have the honor to submit for your approval a report made 

 by Inspector Bitting of experimental work on the spoilage of tomato 

 ketchup, the conditions contributing thereto, methods of prevention, 

 the action of preservatives, and the length of time that the product 

 will keep under varying conditions of manufacture and temperature, 

 both before and after opening. Every effort has been made to 

 conduct the work in a practical way, and the results obtained can 

 not fail to be of interest and profit both to the manufacturer and 

 consumer. I recommend that this report be published as Bulletin 

 No. 119 of the Bureau of Chemistry. 



Respectfully, H. W. WILEY, 



Chief. 

 Hon. JAMES WILSON, 



Secretary of Agriculture. 



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