YUZO HOSHINO 27 1 
the following year, further experiments on this interesting subject were not 
carried out. In 1905, Moquette's paper appeared and confirmed the author's 
observations. 
F3 Raising. 
In 19 10, the pressure of other work prevented the sowing of the seeds 
from the ¥^ plants of the previous year at the same time with the cross grains 
on May 18, and we were obliged to sow them 10 days later. Adopting the 
method which is followed by practical farmers when the sowing has been 
delayed, we sowed all the grains after husking them. Germination was not 
bad, but many of the young plantlets were injured by mould and some were 
killed. So the raising of 19 10 did not give any reliable results. 
In 191 I, we took 43 pots filled with river sand and sowed 20 seeds in 
each pot. After the young plants had grown 2 inches, half of them were 
thinned out. During the experiments, 5 pots, Nos. 4, 28, 30, 34 and 36, 
began to leak and could not be mended. So those plants which were grown 
in these pots were discarded. When K- P. began to shoot, a lowering of the 
temperature evidently affected the vegetative force of the plant. Therefore 
the variation range of the shooting time in K- P- became far wider than that 
in A. p. 
Table 19 shows that the offsprings varied within the combined range 
of A- P- and K- P.j Jincl there was no transgressive variation. By summing 
up the number of individuals in each class, we get the minimum frequency 
class (104), midway between the variation ranges of A. P- and K- and can 
divide all individuals into two groups, the early-shooting and late-shooting, 
as we divided the early-flowering and late-flowering in the F^ of pea hybrids. 
But in the present case, where the shooting period of F inclined toward that 
of the early parent, there were a greater number of individuals in the early 
group than in the late group (220 : i2o); while in the case of peas, where 
the flowering period of inclined toward the late parent, the number of 
individuals was greater in the late group than in the early group. (Tables 2 
