ave seen most of are the Hathaway
and the Spineless. Both of these are subject to the disease in the
ordinary form. The American varieties which have been originated within
a few years, the Boone and the Rochester, I am not prepared to say
anything about at the present time. The resistance or immunity of these
varieties has not been determined so far as my own work is concerned. Of
the European varieties we have a great many and they produce, as a rule,
the large chestnuts of the market and are known under various names.
Some are scions of named varieties and I will mention some of the more
prominent. The first and best known, perhaps, is the Paragon chestnut.
This is susceptible to the disease and takes it in almost as violent a
form as does the American, and so it is with the Ridgely, a nut which
originated near Dover, Delaware. The Dager and the Scott also take the
disease, and so do many of the so-called French varieties--the Marron,
the Marron Combale, the Early Marron and others--so far as I have been
able to ascertain. I have not seen very many Numbo trees, but of those
which I have seen, some have been diseased. Two varieties, which I have
seen have not had any disease upon them. One of these I saw only once or
twice and was unable to make a thorough examination. This is the
Darlington chestnut which grows near West Chester, Pa. I have no reason
to think this is immune in any way to the disease; all I can say is that
I have not yet seen the disease on this variety. Another variety which I
have heard a great deal about from the point of view of resisting the
disease is the Hannum. I don't know anything about this. I have been
unable to locate any trees which I could examine. Now these are all the
varieties of the European or American sorts that I care to speak about,
and we can say that they are all, so far as we know, with the possible
exception of the one or two last mentioned, subject to the disease.

Now let me turn for a moment to two other types of chestnut. First the
chinquapin, a small dwarf chestnut which grows in the southern Atlantic
states but reaches as far north as New Jersey and perhaps farther for
all I know. The chinquapin in the past has been regarded as a rather
resistant species and my own observations seem to bear out this
supposition. I have seen very few chinquapins which had the disease. It
may be due partly to the fact that they are not so subject to the
attacks of insects and injuries thr