to be found. Of these fungi the walnut bacteriosis,
caused by a bacterial germ is more important than all the rest of the
parasites put together we can easily say. The California walnut
bacteriosis has turned up at various points in the East. The twig blight
form of this disease is also prevalent in various states. The walnut
blight or bacteriosis is therefore to be figured with in planting the
Persian walnut in the East.

* * * * *

PROFESSOR SMITH: Is it worse or better here than in California?

PROFESSOR WAITE: There have not been enough walnuts grown here in groves
to allow the disease to accumulate--to have a fair test for that,
Professor Smith. I don't believe we know; but it is, undoubtedly, a
parasite of our native black walnuts. It occurs in Texas and Louisiana,
and I think we have it in or near Buffalo, N. Y., and in New Jersey, so
if I were planting extensively I should expect that disease to be
serious. That would be my forecast of the matter. The humidity and the
cloudy weather in the East ought to be more favorable to the disease
than the climate of California.

MR. JONES: For that reason I should think the disease would work fast in
the Gulf Coast.

PROFESSOR WAITE: Yes, those specimens of yours seem to show a very
serious condition.

We must not pass over the chestnut without noting that there are thirty
species of fungi attacking it, and that does not include the new one,
the bad one, the chestnut bark disease.

The filbert blight belongs with the diseases of the European grape and
sweet cherry. The filbert is an example of a European plant introduced
into the eastern United States attacked by a native parasite which
almost drives it out of cultivation. In fact, there are so few filberts
in cultivation even now that if we were trying to plan a spraying
experiment on them we would not know where to find a plantation suitable
for carrying on the experiment. If any of you know of any such
plantations I would like you to let me know about them.

THE CHAIRMAN: We will have some in two or three years.

PROFESSOR WAITE: Here is a sample of the filbert fungus taken from our
pathological collection. It shows the mature fruiting bodies of the
fungus and it also shows that the twigs are killed. This fungus is
known as _Cryptosporella anomala_. It was described as _Diatrype
anomala_ by Peck of Albany, N. Y., but was afterwards found to belong to
another genus. There have be