532 
Journal of Agricultural Research 
Vo!. XIV, No. x* 
SUMMARY 
This paper describes experiments to determine the effect on the vitality 
of certain seeds when dried under varying conditions and for varying 
lengths of time. 
It was found that the percentage of germination was not materially 
changed when seed of wheat, barley, Sudan grass, Kentucky bluegrass, 
and Johnson grass was dried to less than i per cent of moisture. The 
percentage of germination of Kentucky bluegrass and Johnson grass 
seed was not affected when the moisture was further reduced to o.i per 
cent, although the vigor of the Kentucky bluegrass seedlings was greatly 
reduced. When Kentucky bluegrass seed was further dried in a vacuum 
oven for six hours at ioo° C., the vigor of the seedlings was further 
reduced, but the percentage of germination was not materially affected. 
All this controverts Ewart’s statements as to the degree of drying 
which seeds are capable of withstanding and remaining viable, so far as 
the seeds used in this experiment are concerned. 
