PESTS OF TOBACCO. 



237 



White veins, as a disease, is confined to the seed- 

 leaf and Havana-seed varieties, and is much dreaded, 

 because it greatly impairs the value of the tobacco in 

 which it occurs. White veins in the districts growing 

 yellow tobacco are desired, because they add to the 

 beauty and value of the yellow product. 



Leprosy is the common name applied to a greenish 

 fungous growth that attacks curing tobacco in the lower 



FIG. 66. TOBACCO MINER, 

 a, Adult moth; b, worm ; and c, part of leaf damaged by this worm. 



Ohio districts of Kentucky. The fungi increase with 

 amazing rapidity, and they extend even to sound, dry 

 tobacco in proximity, seriously damaging it. This is a 

 disease that is doubtless propagated from spores, which 

 find congenial lodgment in badly kept barns or tobacco 

 sheds, or packing houses. All old trash left in such 



