leaves.

DR. SMITH: Wood of that year or previous?

PROF. MANEY: That year. The entire graft was covered with
paraffin. This picture was taken on September 5th, a period of 55 days
later, and during that time growth was 25 inches. I am sure it can be
worked very successfully with different fruit trees. It is especially
valuable in replacing dead grafts. These grafts went through the very
severe winter very successfully. I am sure I appreciate this opportunity
to appear on the program, and I hope to continue with the work at Ames
and perhaps appear at future dates.

MR. WEBER: May I ask how hot it got that summer?

PROF. MANEY: Oh, the temperature was up to 100, 103 and 104.

MR. WEBER: What kind of paraffin did you use?

PROF. MANEY: Just ordinary paraffin.

MR. WEBER: Did you notice any bad results?

PROF. MANEY: No, apparently no ill effects.

MR. WEBER: Paraffin has a tendency when it gets extremely hot
to run down and kill the graft.

DR. SMITH: What would be the effect of putting in some beeswax?

PROF. MANEY: I think that would be all right.

MR. WEBER: Paraffin this summer killed two nut grafts for me.

DR. ZIMMERMAN: Are you sure it was the paraffin? I have finally
come to the conclusion that when the sun gets hot enough to melt the wax
it will kill the graft anyway.

MR. WEBER: I noticed the heat did not kill another one that I
did not use the paraffin on. Previous years it simply scorched the tree.

DR. ZIMMERMAN: The heavy coating of wax protects a little from
the heat, I thought.

MR. HARRINGTON: In very hot weather I put heavy paper around
the graft and a handful of dirt. That protects it from the sun.

MR. WEBER: I have tried that.

THE PRESIDENT: I am very much interested in seeing Professor
Maney's spraying apparatus. We also tried to spray and got something
like snow. We also found that the wax congealed in the nozzle. Last
spring I almost blew my head off. I am now experimenting with a material
which acts as an emulsifying agent on waxes and resin. I have developed
a formula, paraffin 5 pounds and Pick Up Gum one pound. I dissolve the
emulsifying agent and heat the wax. This solution can be sprayed on
trees without difficulty when it is warm. When it gets cool, however, we
have to heat it again. I hope to have some definite reports to make as
to the feasibility of this later on, and possibly on conifers as well.
We have been up a tree when it came to spraying wax and we have been