pi. XXV JULY 14, 1923 
No.2 
CONTENTS 
Page 
Transmission, Variation, and Control of Certain Degeneration 
Diseases of Irish Potatoes — - - - ^ 
E. SvSCHUI/rZ and DONAU> FOI^OM 
(Contribution from Bureau ol Plant Industry and Maine Agricultural Experiment Station) 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
[WASHINGTON ,D.C. 
GOVERNMENT PRINTING OFFICE 
