looked like this (showing specimen).

MR. LITTLEPAGE: Did you notice that tree just across the fence? The
reason I ask the question is that if that is blight out there, then that
tree right across the fence is very likely resistant, because I have
noticed that those walnuts have had this on and off for six or seven
years. The limbs of the two trees are within twenty feet of each other.

MR. MCMURRAN: Well, that is a very encouraging point.

MR. LITTLEPAGE: I didn't think that was blight. All those trees at
Georgetown that I have observed have that condition on them, more or
less, except that one tree.

MR. MCMURRAN: Yet, isn't it true that they bore pretty good crops of
nuts, nevertheless?

MR. LITTLEPAGE: Oh, yes.

MR. MCMURRAN: Well, that was the point I had in mind. Of the two trees
one bears every other year, and the other bears heavy crops every year.

DR. MORRIS: You see the same thing at the Experiment Station in southern
California. One tree will be absolutely resistant to blight; the other
will be all killed. And down at Whittier, perhaps, seven-tenths of all
the trees will be badly affected with the bacteriosis, and the others
not very much affected, so that, apparently, it is largely a matter of
this cynips, which introduces the bacteria, selecting certain trees.
Certain walnuts are very much affected, and the involucre looks very
much like that of these nuts (showing specimens), but, on examining
them, I found a very large number of small larvae beneath the involucre.
I sent some of them to the Connecticut Experiment Station and some to
Washington, but they didn't tell me what they were. Those same larvae I
found in one black walnut on my place, which is very heavily infested
with them. Most of the nuts drop because of the injury to the involucre.
I haven't determined the species yet. I don't know whether the larvae
come first and the bacteriosis second, or whether it's the other way
around.

THE PRESIDENT: Are there other persons who wish to give themselves a
chance of asking Mr. McMurran a question? I have a question that is
troubling me. Perhaps the house can throw light upon it. I had a number
of Persian walnuts, Vrooman Franquette and Mayette, grafted on black,
and by the Fourth of July they were growing nicely, with tops all the
way from four to twenty-four inches long, and then the tip got black and
the blackness went down. I sent a sample to Mr. McMurran. The leaves
first died and then the