10 amperes at 300 RPM._]

The butternut is attacked by one serious disease which is in the nature
of a blight (melanconium oblongum), since it is transmitted through
spores. It usually attacks old trees, the branches of the top part
dying, and the bark on the main trunk becoming loose. The disease
progresses slowly and I have seen large trees infected for twelve or
fifteen years, continuing to bear fine crops. It does have a very
weakening effect, though, and eventually saps the life from the tree
long before its natural span of life of about fifty years is over.




Chapter 9

PIONEERING WITH ENGLISH WALNUTS IN WISCONSIN


The convention of the Northern Nut Growers' Association at Geneva, New
York, in 1936, brought many interesting subjects to the attention of nut
enthusiasts. None, however, commanded as much attention as an exhibit by
Paul C. Crath, of Toronto, of walnuts from the Carpathian Mountains in
Europe. There were more than forty varieties of walnuts represented in
it, in sizes ranging from that of a large filbert to that of a very
large hen's egg, and in shape being globular, ovate or rectangular. The
exhibitor had these identified by varietal numbers until testing and
propagation should suggest appropriate names. In several talks which
Rev. Crath gave during the convention, he described his trips and
findings in the walnut-producing sections of the Polish Carpathians. The