A. B. Strout 111 
individual flowers. -This generation descended from 6 of the J, genera- 
tion and these in turn from 2 plants of the 1916 crop. The complete 
pedigree is given in Table IV and the records for typical plants of the two 
families of the 7, generation.are given in Tables II and II (pp. 112—113). 
The family R 10-S- 
Series R 10-8-173- . The parent of this series (see Table I) was 
judged as 14°/, self-compatible. Of the 84 seed planted, 66 germinated 
and 55 plants were grown to maturity and tested. Thirty-six plants 
were self-incompatible and 19 were self-compatible, a ratio of 2 to 1. 
The highest percentage of self-compatibility was 47 °/.. 
Series R 10-8-37— . The immediate parent was judged as 29 °/. 
self-compatible. Of its seed, 126 were planted; 86 seed germinated 
and 56 plants were grown to maturity and tested. Thirty-nine plants 
were self-compatible and 17 were self-incompatible, a ratio the inverse 
of that in the series above. The percentages of self-fertility for 4 
plants were above 50 and there were 11 plants with a percentage higher 
than 25. 
Series R 10-8-140- . The self-compatibility of the parent was 
judged to be 30°/,. Mice destroyed many seed after planting but 49 
plants were grown and tested. Of these 32 were self-compatible. 
The family R 72-11- 
Three series were grown in the J, of this family. The immediate 
parents were judged as 60, 37, aad 35 °/, self-compatible from data pre- 
sented in Table I. 
Series R 12-11-59- . Of 175 seed planted, 155 germinated, of 
which 136 plants were grown and tested. Forty-two were self-incom- 
patible and 94 were self-compatible. Three plants evidently feebly 
self-compatible were prematurely killed by pine mice ; the individual 
fertilities of the others ranged to 59°/, with distribution as shown in 
Table IV. Complete data for 3 plants of this series have already been 
given and discussed on page 106. 
Series R 12-11-49- . The immediate parent was judged as 35 °/, 
self-fertile. Of the 210 seed planted, 136 germinated, and 131 plants 
Were grown to maturity. Tests for self-fertility were made for 115 plants ; 
77 were self-incompatible and 38 were self-compatible to some degree. 
There was only one plant with a self-fertility above 25 of 
Table III, in which the results for three of the self-fertile plants of 
this series are given, includes also certain special data. That for No. 12 
aon 
