354 BOTANICAL GAZETTE [DECEMBER 
RAPIDITY OF GERMINATION BETWEEN AND ON TOP OF BLOT- 
TERS.—In 1914 the poppy seeds were tested simultaneously 
on top of blotters and between blotters. Except in the icebox, the 
position of the seeds did not affect the rapidity of germination. 
In the icebox Papaver somniferum, two lots of P. rhoeas, and one 
lot of the undetermined species germinated much more rapidly 
between blotters than on top of blotters, while there was no differ- 
ence with the other two lots. The greatest difference was with 
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Fic. 1o.—Average rates of germination in icebox of six lots of poppy seeds, 
between blotters and on top of blotters. 
one lot of P. somniferum, only 5 per cent of which germinated in 
the first seven days when on top of blotters, in contrast with 51 
per cent between blotters. As the temperature of the icebox was 
very cool, the further reduction of temperature on the surface 
of the blotters by evaporation probably was sufficient to retard 
the germination of these lots, and also may explain the lower 
total germination on top of the blotters. Fig. 10 shows the average 
rates of germination in the icebox of the six lots of poppy seeds 
which germinated more rapidly between blotters. 
