U. S. DEPARTMENT OE AGRICULTURE. 



BUREAU OF PLANT INDUSTRY- BULLETIN NO. 93. 



K. T. 'i\lAAA\A\, Chief n/JUirmu. 



Tin: 



CONTUOL OF APIM.E IJITTEll-ROT. 



BY 



W. M. SCOTT. Patholo(;ist. 



BOT.ANiCA; 



VEGETABLE PATHOLOGICAL AND PHYSIOLOGICAL 

 INVESTIGATIONS. 



Issued March 14, 1906. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1906. 



