YUZO HOSHINO 255 
than that of 0 in the previous table, but the earlier constant families of the 
present raising vary in a later range compared with 0. It is probable that 
the parent family of 0 was retarded in its flowering time, as in the case of 
the parent family of L- 
Q and R. The variation types of the present two raisings are also of 
the monohybrid segregation. The earlier constants among them are to be 
classified as the late intermediate constant, and the later constants have almost 
equal variation means as G- P- are to be classified as the true late con- 
stant. The parent family of R (No. 83 in Table i i) varied in a later range 
compared with that of Q (No. 82), but in the table we can see practically no 
difference in variation between Q, and R. So we can assume that the pa''ent 
family of R was retarded in its flowering time, together with its neighbours 
(Families No. 8 and No. 68), probably by the soil property of the row. 
Table 18. 
S and T. The parent families of the 2 raisings varied within the com- 
bined range of M- P- and G, P-j as in the case of the families. Now, 
by raising the F_j^ progenies, we obtained types of variation similar to the 
Fg raisings shown in Tables 9, 10 and i i. There are early constants (No. i 
in S) Nos. I and 2 in T?) pseudo-early constants (No. 2 in T), early inter- 
mediate constants (Nos. 3, 4 and 5 in T)? late intermediate constants (Nos. 3, 
4, 5 and 6 in T)> and late constants (Nos. 6 and 7 in S, No. 7 in T). The 
rest are all variable Himilies. Those descended from the Fg individuals which 
were to be grouped as the early flowering, do not vary so widely as to reach 
the range of G- P-? while those which descended from the late flowering 
group vary in different grades of width of the variation range. (See pages 
248 and 249) From these facts we may safely conclude that the F^ grand- 
parent plants of S and T were equal, or nearly so, in flowering character as 
the Fj^ hybrid plant. And it is noticeable that the late constant in S has 
larger variation means than that in T, while the parent family of S v'aried 
more widely than that of T in the upper end of the range. 
