BULLETIN OF THE BUSSEY INSTITUTION. 453 
Tn the preceding pages, we have attempted to dispel a certain mystery 
which hangs about the black knot in the minds of fruit-raisers, and to 
convince them that it is amenable to treatment. We can hardly expect, 
seeing how wide-spread the disease is in the eastern part of our country, 
that it will be entirely driven off, except by extraordinary exertions on 
the part of fruit-raisers. Knowing, however, where it comes from and 
how it is propagated, there can be no possible excuse for allowing it | 
to spread to parts of the country which are at present free from the 
disease. The disease is as yet unknown in Europe, and there is 
little probability that it will be introduced by the importation of culti- 
vated American varieties of plums or cherries. It is more likely 
to find its way to Europe on our wild species which may be introduced 
into the different botanical gardens, and the directors of such gar- 
dens should be very cautious about importing Prunus Virginiana, 
P. Americana, or P. Pennsylvanica; for the black knot would prove 
an unwelcome guest, in comparison with which the now notorious 
Babington’s curse would seem insignificant. 
