my light went out, only one caught. In examining
into the philosophy of it a week later I found that the paraffin, being
a little too thick, had cracked.

QUESTION: When is the best time to do the grafting?

DR. MORRIS: I think the best time is after the sap season in the spring;
all through the latter part of May and in June and the first half of
July.

QUESTION: Do you use paraffin of a particular melting point?

DR. MORRIS: I have tried many but the one I use the most is the
commonest one. You can buy parawax in all groceries. If you wish to make
the parawax harder for the southern sun put in stearic acid. It may be
bought at any drugstore. Melt it with the paraffin and that will harden
it very much.

QUESTION: What proportion do you use?

DR. MORRIS: It would depend on the degree of heat to be resisted. I
suppose you might use it in the proportion of one to four of parawax,
but very little stearic acid will harden it.

QUESTION: Isn't there a tendency to melt under the high temperature of
the sun?

DR. MORRIS: As a matter of fact I pay no attention to that in the North.
Although we have very hot days and the paraffin does soften, it does not
seem to interfere with the repair on the part of the tree.

QUESTION: In the case of smaller grafts, what would be your objection to
the use of the ordinary whip graft?

DR. MORRIS: It makes one more motion.

QUESTION: It seems to me that it is more quickly done?

DR. MORRIS: It may be; that is a matter of individual technic. My idea
is to do the thing the quickest way. If a man has found that he can put
on one graft more quickly, that he has a technic that gives him speed,
which is one of the essentials of grafting, if you can put on the whip
graft quicker than I can put the other on, do it.

QUESTION: Do you have any trouble with the oxidizing of the cambium?

DR. MORRIS: Yes and no. Of course you free a certain number of enzymes.
I haven't thought of it as an oxidizing process so much as an enzymic
injury, where enzymes are freed from an organic solution.

QUESTION: I think that is correct. That is the common method of
expressing it.

DR. MORRIS: I use sometimes, when the weather is very hot and I am
grafting in the midst of sunshine on a hot day, a solution that I have
described containing salts belonging to the salts of trees. I use that
to dip my graft in and in that way the enzymes that are freed from the
cut surface are removed by the solution in suc