d not but should rather
encourage planting of these nuts. In spite of the presence of this
disease on the Pacific Coast the walnut industry has grown to be very
profitable, and if it proves that late infection is the rule in the East
there is every reason to believe that the disease will not be so
serious. That is practically the only walnut disease worthy of attention
at present.

The filbert disease is a fungus disease and Dr. Morris and others are
authority for the statement that it can be readily controlled by cutting
out.

DR. MORRIS: I will show this afternoon that it can be
controlled in a way.

DR. MCMURREN: We in the department have not been in a position
to do any work on the hazel blight so far. The hazel blight is
interesting in that it illustrates a principle in plant diseases which
it is well to know, that most of our serious plant diseases fall in one
of two classes; either a native disease on imported plants or an
imported disease on native plants. This filbert blight is very slight
on native hazels but very serious on imported European hazels. I do not
think there is anything more on the filbert disease, but Dr. Morris will
have some interesting things to show you this afternoon.

I want to interject a remark here about the business of planting trees
for commercial crops along the road sides. There is more to be
considered than the mere matter of planting a tree. Insect pests and
diseases have to be taken into consideration. There is nothing that an
apple orchard planter more hates to see than a tree out of the orchard.
It doesn't receive proper attention and is apt to be a source of
disease. I believe that wherever the nut industry has been established
on an orchard scale it is a matter that should receive careful thought
before trees are planted on the road side. When you have an adequate
fertilizing department and can give it careful attention the same as
trees in the orchard, all right. But they do not as a rule receive it.
Roadside planting perhaps sounds very attractive on the surface and is
probably a very good plan in some cases, but I think it is open to grave
objections where an orchard industry is in the same section.

THE SECRETARY: I am sorry that Mr. C. A. Reed is not here to
take up the discussion of the walnut blight, because I think he takes a
little more serious view of it than Mr. McMurren.

MR. MCMURREN: I know he does.

THE SECRETARY: That is right that Mr. Reed does, and I