. The book of the garden. Gardening. 514 FRUIT GARDEN. sulphur and an equal volume of quicklime in a glazed earthen vessel, with five pints of water: it should be allowed to boil ten minutes, and kept constantly stirred, after which it should be allowed to settle, and the clear liquid to cool; and after diluting with a hundred pints of water, it should be applied to the trees by the syringe or engine. In peach-houses, dry sijphurating is the safest, as there is danger in washing the flues or hot-water pipes with either sulphur alone, or combined in this way with lime ; but in either case the h
. The book of the garden. Gardening. 514 FRUIT GARDEN. sulphur and an equal volume of quicklime in a glazed earthen vessel, with five pints of water: it should be allowed to boil ten minutes, and kept constantly stirred, after which it should be allowed to settle, and the clear liquid to cool; and after diluting with a hundred pints of water, it should be applied to the trees by the syringe or engine. In peach-houses, dry sijphurating is the safest, as there is danger in washing the flues or hot-water pipes with either sulphur alone, or combined in this way with lime ; but in either case the heated surface must not ex- ceed the temperature of 212°. The origin and nature of honey dew are even more undetermined than of mildew, some be- lieving it to be an exudation from the leaves, caused by the puncture of aphides; others, that it is a species of excrement passed by them; and many, that it is an exudation of super- abundant saccharine matter, caused by a heated and dry state of thf atmosphere. Whatever its cause may be, it is highly injurious, as it not only covers the surface of the leaves with a thick glutinous substance, but its adhesiveness causes dust and other filth to accumulate upon them, till at last their pores of respiration are completely sealed up, and their vital functions become suspended. Copious syringing is the best remedy. Blistering, wrinkling, or curling up of the leaves, is seldom met with in peach-houses; on the open walls it is of not unfrequent occurrence. The very circumstance here I'eferred to certainly points pretty nearly to the cause; namely, a want of reciprocity between the action of the roots and leaves, the latter drawing more rapidly on the former than they are adequate to. Blistering usually takes place when the leaves are from half to nearly fully grown, at which time their sap-vessels are enlarging rapidly to contain the supply expected from the roots, and which enlargement of vessels is encouraged in consequence of their being
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
