478 
Syncotylous Races. 
portion of hemi-syncotyls among the seedlings, i. e., that 
parent was chosen which produced the highest percentage 
of hemi-syncotyls, no regard being paid to the number of 
syncotyls produced. 
I shall now give the values of these selected parents 
for several generations in tabular form : 
HEMI-SYNCOTYLOUS RACE. 
HEREDITARY VALUE OF THE SEED-PARENTS SELECTED FOR THE CONTINUA- 
TION OF THIS RACE. 
From the 
harvest of 
Proportion in percentages of 
Degree of symphysis 
of cotyledons 
Hemi-syncotyls 
Syncotyls 
Totals 
1880 
5 
76 
81 
i 
1890 
40 
36 
76 
i 
1891 
15 
15 
30 
\ 
1892 
20 
20 
40 
\ 
1893 
28 
27 
55 
~2 
1894 
31 
55 
86 
2 
1895 
34 
35 
69 
1 
1896 
37 
30 
67 

In this table the degree of symphysis in the cotyledons 
is given for each parent selected. This was, where pos- 
sible one-half, i. e., the cotyledons were fused along half 
the distance between the upper end of their petioles and 
their tips. In the earlier years this was more or less a 
matter of chance, and in the harvest of 1890 it was by 
no means the plant with the highest degree of fusion that 
gave the best hereditary value. Later, I could limit my- 
self to planting out those seedlings in which the fusion 
had only extended half-way and so I only determined 
the values from these. 
The first row of the table (1889) refers to that indi- 
vidual of the syncotylous race (p. 470), whose offspring 
constituted the basis for this special culture. The selec- 
