"This disease, which commenced its ravages in New Jersey and Pennsylvania about the year 1797, and in New York in 1801, and has spread through several of the states, is by far more destructive to peach trees than the worm, and is evidently contagious. This disease is spread at the time when the trees are in bloom, and is disseminated by the pollen or farina blowing from the flowers of diseased trees, and impregnating the flowers of those which are healthy, and which is quickly circulated by the sap through the branches, foliage, and fruit, causing the fruit, wherever the infection extends, to ripen prematurely. That this disease is entirely distinct from the worm, is sufficiently proved by the circumstance, that peach trees which have been inoculated on plum or almond stocks, though less affected by the worm, are equally subject to the yellows--and a decisive proof of its being contagious is, that a healthy tree, inoculated from a branch of a diseased one, instead of restoring the graft to vigour and health, immediately becomes itself infected with the disease. As all efforts totally to subdue it must require a long course of time, the best method to pursue towards its eventual eradication, is to stop its progress, and prevent its farther extension--to accomplish which, the following means are recommended, which have been found particularly successful. As soon as a tree is discovered to possess the characteristics of the disease, which is generally known by the leaves putting on a sickly yellow appearance--but of which the premature ripening of the fruit is a decisive proof--it should be marked, so as to be removed the ensuing autumn, which must be done without fail, for if left again to bloom, it would impart the disease to many others in its vicinity; care is also necessary, in its removal, to take out all the roots of the diseased tree, especially if another is to be planted in the same place, so that the roots of the tree to be planted may not come in contact with any of those of the one which was diseased. If your neighbour has trees infected with the yellows in a quarter contiguous to yours, it will be necessary to prevail on him to remove them, that yours may not be injured by them. By being thus particular in speedily removing such trees as may be infected, the disease is prevented from extending itself to the rest of the orchard, and the residue will consequently be preserved in perfect health at the trifling loss of a few trees annually from a large orchard." The influence of yellows on the peach-industry of the country is shown by indicating when it appeared in the various states in which peaches are grown in eastern America and by noting the effects of epidemics of the disease.