_Curled Leaves_ is another evil among peach-trees, occurring before the leaves are fully grown, and causing them to fall off after two or three weeks. Other leaves will put out, but the fruit is destroyed, and the general health of the tree injured. Elliott says the curl of the leaf is produced by the punctures of small insects. One kind of curled leaf is, but not this. But we have no doubt that Barry's theory is the correct one, viz., that it is the effect of sudden changes of the weather. We have noticed the curled leaf in orchards where the trees were so close together as to guard each other. On the side where the cold wind struck them, we noticed they were badly affected; while on the warm side, and in the centre where they were protected by the others, they exhibited very few signs of the curl. In western New York, unusual cold east winds always produce the curled leaves, on trees much exposed: hence, the only remedy is the best protection you can give, by location, &c. _Mildew_ is a minute fungus growing on the ends of tender shoots of certain varieties, checking their growth, and producing other bad effects. Syringe the trees with a weak solution of nitre, one ounce in a gallon of water, which will destroy the fungus and invigorate the tree. _The Borer_ has been the great enemy of the peach-tree, since about the close of the last century. The female insect, that produces the worms, deposites her eggs under rough bark, near the surface of the ground. This is done mostly in July, but occasionally from June to October. The eggs are laid in small punctures, and covered with a greenish glue; in a few days they come out, a small white worm, and eat through the bark where it is tender, just at, or a little below, the surface of the ground; they eat under the bark, between that and the wood, and, consuming a little of each, they frequently girdle the tree; as they grow larger, they perforate the solid wood; when about a year old, they make a cocoon just below the surface of the ground, change into a chrysalis state, and shortly come out a winged insect, to deposite fresh eggs. But the practical part of all this is the _remedy_: keep the ground clean around the trees, and rub off frequently all the rough bark; place around each tree half a peck of air-slaked lime, and the borer will not attack it. This should be placed there on the first of May, and be spread over the ground on the first of October; refuse tobacco-stems, from the cigar-makers, or any other offensive substance, as hen-manure, salt and ashes, &c., will answer the same purpose. We should recommend the annual cultivation of a small piece of ground in tobacco, for use around peach-trees. We have found it very successful against the borer, and it is an excellent manure; applied two or three times during the season, it proves a perfect remedy, and is in no way injurious, as an excessive quantity of lime might be.