Ce haope OED 
/ 
~ 
BULLETIN No. 8. : ar Vs Pie 49, 
‘U.S. DEPARTMENT OF AGRICULTURE. 
_ DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY 
THE PRINCIPAL DISEASES 
BY. 
WALTER T. SWINGLE pb ‘€e 
AND © te 2 ES Dae 
Be ae | te fee 
HERBERT J. WEBBER” gcoh, 
Per amit. % i > 
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WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1896. 
