s it not?

Mr. Roper: The Moneymaker. It had made a growth of four or five feet in
two years.

Mr. Littlepage: Do you know the variety of hickory that it was topworked
to?

Mr. Roper: Just our common hickory, I suppose the pignut.

Mr. Littlepage: It made beautiful growth from the wood standpoint.

Mr. Roper: Mr. Reed's point was that it would do that till it got by the
period of good nutrition from the root. Professor Craig says the
elaboration of food from the pecan top more than overcomes the
deficiency.

Professor Lake: I would like to question Mr. Littlepage's physiological
ground for the lack of proper fusion of liquids between the pecan and
the other hickories. I believe it is not authenticated that the water
supplies from the earth would not distil as fast in the close grained
hickories as in the more open grained pecan. At least, the very close
grained, firm woods of the tropics transmit a tremendous amount of
water, much in excess of many of our fine grained woods of the North.
And it seems to me I wouldn't like to have this Association go on record
as vouching for this explanation exactly. It seems to me there are
better explanations. Lack of fusion is not due to the amount of water
that is carried up, but rather to the fact that the root system of the
hickory does not develop fast enough to collect water to transmit.

Mr. Littlepage: I am very glad to hear Professor Lake's statements. My
suggestions were given only as a possible theory that occurred to me,
and I don't vouch for their accuracy. There must be some explanation to
controvert the general rule which Professor Craig has given us.

Professor Craig: May I add one word? When a stock and scion unite, the
union is really a mechanical one. It is a union of cells, and in that
respect it is simply mechanical, not a physiological union. The
different life types or character of the scion and top do not fuse, but
we have a mechanical union of cells, and that mechanical union is as
clearly shown forth as possible when we make a section through the point
of union. If your type of cell in the stock differs very materially from
the type of structure in the scion, the union is unsatisfactory. If the
types of tissue are much alike, the union is good and you do not have
either overgrowth of stock or undergrowth of scion very much, but you
have what is called a good union. It is to some extent a question of
mechanics, in my judgment, influenced by the cell s