variety of soils in widely Bea sections of the count 
_. previously contaminated with or free from rot. There we 
planted an equal amount of seed from ten varieties that wer 
year free from decay, with ten varieties that last “year a 
failure, with the exception of the test of seed from aie : 
affected tubers. The results of this trial are given in the follow- 
ing table. It will be noticed that in the yield of merchantable 
tubers there is but slight difference in the results, neither i is if 
any material difference in the yield of small tubers, while 
percentage of decay is very much lurger in those from infe 
tubers; still the latter would have given much the larger yield 
for the presence of rot, as a large percentage of those deg 
were of merchantable size. 
z 
