U. S. DEPARTMENT OF AGRICULTURE. 



BUREAtJ^OF PLANT IPUSTRY— BULLETIN NO. 87. 



B. T. GALLOWAY, Chief of Bureau. 



DISEASE RESISTANCE OF POTATOES. 



BY 



L. R. JONES, 



Botanist of the Vermont Agricultural Experiment 



Station, and Collaborator of the Bureau 



OF Plant Industry. 



VEGETABLE PATHOLOGICAL AND PHYSIOLOGICAL 

 INVESTIGATIONS. 



Issued December 5, 1905. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1905. 



