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shows absence of corneous matter, determines the species. The 
dent corns furnish the bulk of our commercial supply for home 
use and export. The varieties grown for this purpose belong 
almost exclusively to sub-species C., and often have very many 
| rows, even to the number of forty-eight. The poketawes or hoko- 
— of the Powhattan Indians, 1608, was a horse-tooth dent. 
The most northern locality represented in my collection is North 
Dakota, an eight-rowed form, sub-species A. The amarillo of 
Peru, as described by Tschudi, I take to be a dent. Ina Chilian 
collection kernels with corneous sides and sweet at summit indi- 
cate the presence of dent corn in that country. The smlho catete 
vermelho, of Brazil, is a dent. 
The Early Adams is a variety in which the ssrecuiariel of the 
kernel arrangement is characteristic. The Extra Early Adams, 
sub-species C., is reported as ripening at Ottawa, Canada. One 
variety grows from African flint seed, through atavism, had ker- 
nels armed with a short, sharp, stiff spine where the silk was 
attached, but this, peculiarity was not reproduced in the growing. 
A red-husked dent is sold by our seedsman, and from Dr. Palmer, 
in 1886, I received two red-husked varieties among seven den 
collected from the San Padro Indians of Mexico. Some varieties 
are described as bearing many ears to a staik, seven to eight in 
the Baden, six to eight for Blount’s Prolific. I have seen as many 
as nine good ears on a stalk of this variety. These varieties are 
also much subject to suckering, as seems also the Chinese tree- 
corn, which is described as branching. The formation of adven- 
titious roots is very noticeable in this species, although not con- 
fined to the dent group. There is also a strong tendency in the 
dent for the ears to hang downward at maturity, thus protecting 
the kernels from the weather. From Dr. Palmer I received from 
the San Padro Indians one sample, five almost bunched ears, the 5 
terminal one about five inches long and kernel-bearing, 4% 
within a space of three inches below were four alternating unfruit: 
ful ears. As will appear elsewhere, we have noted the appearance 
of podded ears on the normal Zea tunicata, in a crop of Blount s 
Prolific. 
In the variety of Sorghum called “«Neeazana” we aces . 
structure of kernel similar to the dent corn. oe 
