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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ...be propagated by budding or grafting from a diseased tree; that the stock, whether peach or almond, also takes the disease, and finally perishes; and that the seeds of the diseased trees produce young trees in which the Yellows sooner or later breaks out. To this we may add that the peach, budded on the plum or apricot, is also known to die with the Yellows. Very frequently only a single branch, or one side of a tree, will be affected the first season. But the next year it invariably spreads through its whole system. Frequently trees badly affected will die the next year. But usually it will last, growing more and more feeble every year, for several seasons. The roots, on digging up the tree, do not appvar in the least diseased. The soil does not appear mateiially to increase or lessen the liability to the Yellows, though it first originated, and is most destructive, in light, warm, sandy soils. Lastly, it is the nearly universal opinion of all orchardists that the Yellows is a contagious disease, spreading gradually, but certainly, from tree to tree through whole orchards. It was conjectured by the lata William Prince that this takes place when the trees are in blossom, the contagion being carried from tree to tree in the pollen by bees and the wind. This view is a questionable one, and it is rendered more doubtful by the fact that experiments have been made by dusting the pollen of diseased trees upon the blossoms of healthy ones without communicating the Yellows. We consider the contagious nature of this malady an unsettled point. Theoretically, we are disinclined to believe it, as we know nothing analogous to it in the vegetable kingdom. But on the other hand it would appear to be practically true, and for all practical purposes we would base our advice...

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