
          175

In A.J. Downing's Catalogue published in 1842 or '43,
he describes the yellows as follows:--

"I.  The yellows is the greatest malady of the peach.  It
affects the whole tree, and the seedlings reared from it are
also more or less diseased in the same manner.["]

"II.  The yellows is a contagious disease, spreading
from tree to tree gradually, and it may be propagated by
grafting or budding from the infected specimens.["]

"III.  This malady may be infallibly known by the following
characteristics: a decidedly yellowish color in the whole
of the leaves of the tree; short and slender branches growing
here and there, clothed with small, half-starved narrow leaves
one-fourth or one-half the usual size; and mottled, small
fruit of inferior quality ripening before the proper season.["]

"IV.  A single tree with this disease will, by its contagious
influence, gradually destroy a whole orchard of healthy
trees.  No pruning or mode of treatment, hitherto discovered
will restore to a healthy state a tree thoroughly diseased
with the yellows.["]

"V.  It is absolutely necessary to destroy all trees
having the yellows, in order to insure a sound condition in a
young plantation yet healthy, etc." The Cultivator, Albany,
N. Y. 1843. p. 103.["]
        