fur the Growth of Undiseased Potatoes. 
387 
tli(^ disease, and the sixth the most. The tendency of these 
results is to support the opinion that a potato may be found 
which will successfully resist the disease. In the crops at 
Exeter, South Wales, Connaught and Leinster, the fourth late 
potato suffered to the extent of only 11-6 per cent., while the 
sixth in the same four localities suffered no less than 43"8 per 
3RAM showing tlie Percen-tage of Diseased to Healthy Tcbees in the different 
OCALITIES in all the VABrETiES which in any locality had more than 10 per cent. 
Tubers diseased. 
;nt. 
;rs. 
Early. 
CoMPEiiXG Potatoes. 
Localities. 
( IG Ayr 
20 Ulster 
17 JIunster 
. — ^ 12 S. Wales Exeter 11 
15 Cumberland 
18 Connaught 18 
Leinslcr 19 
19 Leinster S. Wales 12 
Monster 17 
11 Exeter 
Ayr 16 
cent. The external conditions being the same to each of the 
kinds in each locality, it appears that the power to resist the 
attack of the fungus is due to some inherent property in the 
plant which is common to all the plants of the variety. What- 
ever this property is, there seems no reason to doubt that a 
