S. DEPARTMENT OF AGRICULTURE 
BUREAU OF PLANT INDUSTRY 
THE MOSAIC DISEASE OF S 
1.— A short piece of healthy leaf of the immune variety Kavan- 
gire. 
2.— A piece of leaf of variety B-3922, showing isolated, more 
or less rounded and irregular patches of normal color 
background of pallid, affected tissue. 
riety D-1 1 7, showing a'mosaic pattern 
i nat similar to the above, but ; 
