Bui. 1239. U. S. Dept. of Agriculture. 
Plate IV. 
Fig. I. — Seeds Immersed Five Minutes in a I to 5 Solution. 
The lot of seed at the left was hand threshed and germinated 100 per cent; that at the rich! 
was machine threshed and germinated but 20 per cent. 
Fig. 2. Seeds Immersed One Hour in a I to 5 Solution. 
i he loi of seed at the. left was hand threshed. It germinated 100 per cent, hut the longer 
immersion in the fungicide affected the vigor more seriouslj than in the case of seed immersed 
onlj five minutes. The seed a1 the ri^tit was machine threshed. 
EFFECT OF COPPER SULPHATE ON THE GERMINATION OF 
HAND-THRESHED AND MACHINE-THRESHED WHEAT KER- 
NELS. 
