No. 38.] . 149 
The result gained from the use of seed grown under conditions 
that almost compelled hybridization, some being currently hybrid- 
ized kernels taken from ears of other agricultural species, is shown 
below : 4 
Fiint Corn. — In 1883, nine varieties of these three yielded flint 
and dent ears; one flint dent and soft ears; and five were flint 
ears ; In 1884, seventeen varieties, of which three produced flint 
and dent ears; one flint and pop; one flint, dent and pop; one 
flint and soft, and eleven all flint ears. 
Dent Corn. — In 1883, thirteen varieties; of these, four produced 
flint and dent ears; one swect and flint ears; and six gave all 
dent ears ; in 1884, ten varieties, three yielding dent and flint ears ; 
one dent flint soft and pop ears, and six producing dent ears only. 
‘Sorr Corn. — In 1883, six varieties, all yielding soft ears; in 1884, 
two varieties, both yielding flint and soft ears, 
Pop Corn. — In 1883, nineteen varieties, of these, seven produced 
pop and flint ears ; twelve yielded all pop; in 1884, eight varie- 
ties, one of which yielded pop and flint, and seven all pop ears. 
Sweer Corn. — In 1883, five varieties, two of which yielded pop - 
and flint ears; one the pop ear, and two sweet ears; in 1884 ten 
varieties, all produced sweet ears. 
The summary of these observations are : 
26 Flint cross-breds produced 16 times their own species. 
23 Dent cross-breds produced 12 times their own species. 
8 Soft cross-breds produced 6 times their own species. 
27 Pop cross-breds produced 19 times their own species. 
15 Sweet cross-breds produced 12 times their own species. 
Proposition 3. Cross-bred corn has a greater tendency to cur- 
rent cross-fertilization than purely bred corn, on the face of our 
evidence. 
There‘is one peculiarity of this cross-bred seed which is worthy 
of mention, and this is that the progeny of these cross-bred seed 
show a stronger tendency toward receiving current cross-fertilization 
than pure seed, thus: 
Fuint Corn. — In 1883, nine varieties, one of which had flint and 
dent kernels, and eight all flint; in 1884, fourteen varieties, of 
_these three had sweet and flint kernels; two had flint and dent 
kernels, two had soft, flint and sweet kernels, two had flint, sweet 
and pop kernels, and five all flint kernels. 
Dent Corn. — In 1883, thirteen varieties, one of which produced 
sweet, dent and flint kernels, and twelve all dent kernels ; in 1884, 
six varieties, of which one had flint and dent; one had sweet and ~ 
dent ; one had sweet, soft and pop kernels; one had sweet, flint- 
and dent ; and two had all dent kernels. 
