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most skeptical of the ease with which my theory explains all others 

 that have been useful. Wiih these few and imperfect remarks, the 

 above is submitted to the consideration of the Executive Committee of 

 the State Agricultural Society of Michigan, trusting that their disposi- 

 tion of it will be honorable to myself, by enabhng me to confer a ben- 

 efit on the Society, and through them on the world. 



From nearly the first of Mr. Roberts' researches into the disease of 

 the potato, I have been conversant with him, and have myself adopted 

 his theory, and practiced upon it. I am fully convinced of its truth 

 and importance to the world. And while it claims to be the only per- 

 fect and radical cure, it does not conflict with any theories which have 

 partially restored this valuable esculent, but gains additional strength by 

 its perfect harmony with them all. LAWRENCE NOBLE. 



Salem, Dec. 18, 1855. 



Having planted seed procured of Mr. E. C. Roberts, for two years 

 past, I fiod my potatoes far superior to any I have raised for ten years 

 previous; and from the knowledge I have of his theory, I have no 

 doubt of his success in restoring the potato to its original purity. 



J. H. PHILLIPS. 



Salem, Dec. 19, 1855. 



