THINGS TO REMEMBER WHEN BUVING HYBRID SEED CORN 
^Hybrid seed corn is the First-generation cross, or 
hybrid involving two or more inbred strains of corn. 
*Correctly adapted hybrids, in favorable conditions, 
outyield ordinary varieties 10 to 30 per cent. 
*A good hybrid is a very efficient kind of corn, the 
plants of which are uniform in their good character¬ 
istics. 
*There is just as much variation between hybrids as there 
is between ordinary varieties. 
*individual hybrids are more definite in character than 
individual varieties. 
*The full value of hybrid seed exists only in the first 
generation following the cross. Seed from the crop 
produced by hybrid seed will yield less than the first 
generation and may be inferior to that of open-pollinat¬ 
ed 
^Hybrids are adapted to various localities just as are 
varieties, and hybrid seed corn should be used only 
when it is known that the particular hybrid is adapted 
to, and productive in, the particular locality. 
*A poor hybrid is not efficient. The plants are uniform, 
but uniformly poor. 
*KEySTONE HYBRIDS ARE GOOD HYBRIDS. 
PRICES 
(Semesan Included) 
FLAT 
SMALL 
LARGE 
EDGEDROP 
ROUND 
ROUND 
Keystone 38. 
$7.00 
$6.00 
$5.00 
Keystone 40 
7.50 
6.50 
5.50 
Keystone Mo. 8. 
6.50 
5.50 
4.50 
Keystone Mo. 47. 
6.50 
5.50 
4.50 
Keystone III. 960. 
6.00 
5.00 
4.00 
Keystone U. S. 1 3. 
7.00 
6.00 
5.00 
Keystone Iowa 13. 
5.00 
4.00 
3.00 
Produced And Distributed By 
Main Plant, General Office: 
101 CHOUTEAU AVE. 
CORNELI SEED COMPANY 
ST. LOUIS MISSOURI 
- • - 
For Sale By 
