out in so many places. She had put them all neatly together in a
closet on one shelf, and there was none of the pollen that I could use,
because the wind had mixed the kinds all up. I had eight kinds of pollen
across which one kind of wind had blown.

There is one practical point in cross pollenizing flowers that I have
recently learned. Pollen of one variety may not combine with the ovule
of another variety or species but may stimulate the ovule to go on and
develop all alone, without taking to itself the added pollen. That is a
very important point, and possibly a new point. I was deceived, and
reported that I had crosses of certain trees, and that such hybrids were
growing. I knew that the flowers of parent trees had been properly
protected from their own pollen. Now when these young trees are two
years of age, I find they are true to one parent type; so true that they
are evidently not hybrids. They have developed from the pistillate
parent only. In ordinary parthenogenesis the fruit grows without any
pollen influence at all. This forced parthenogenesis which I have
described seems to be a phenomenon with which botanists are unfamiliar.
Until I learn that it has been described and named by others I shall
call it Allergic Parthenogenesis (Allos, ergon). The pistillate flowers
accept absolutely no pollen, but go on and develop because of its
impulse given. In cross pollenizing flowers, I find one point of great
practical consequence. When covering the female flowers with paper bags
to protect them from their own pollen you give protection to a great
number of insects. The insects remain inside these bags and destroy the
leaves and flowers. They are protected there from their enemies,
predatory insects and the birds. When the bags are taken off, perhaps a
week later, for the purpose of adding pollen to pistillate flowers,
insects may have destroyed the leaves and even the flowers.
Consequently, I find it best to sprinkle the leaves with Persian insect
powder and to put some of it in the bags that are to cover the flowers.
Insects can't live in an atmosphere of this insect powder. They sneeze
themselves to death. I have taken the bags from leaves and flowers which
were so badly injured by insects you could distinguish them at a
considerable distance. Those are all the points that I jotted down for
this address today, but no doubt many other points will be brought out
in the subsequent discussion.

MR. MCCOY: I would li