. The Book of gardening; a handbook of horticulture. Gardening; Horticulture. ON FRUIT CULTURE. I°37 carefully collect and burn all fruits which fall early in the season. He should also shake the trees to dislodge any fruit attacked which are holding on. The bark should be carefully treated when the trees are at rest in winter, using caustic potash and soda, as elsewhere advised. Though the Brindle Beauty Moth (Biston hirtarius, Fig. 671) is usually regarded as partial to Oak and to Elm, yet it now and again appears as a pest to Plum- and less often to Pear-growers. The- Moth has greyish - bro
. The Book of gardening; a handbook of horticulture. Gardening; Horticulture. ON FRUIT CULTURE. I°37 carefully collect and burn all fruits which fall early in the season. He should also shake the trees to dislodge any fruit attacked which are holding on. The bark should be carefully treated when the trees are at rest in winter, using caustic potash and soda, as elsewhere advised. Though the Brindle Beauty Moth (Biston hirtarius, Fig. 671) is usually regarded as partial to Oak and to Elm, yet it now and again appears as a pest to Plum- and less often to Pear-growers. The- Moth has greyish - brown forewings, with irregular trans- verse markings and slightly paler hindwings. The larva is reddish- brown or purplish-brown, relieved by a yellowish- brown band and yellowish dots. It is found in early summer. Spraying with Paris Green is the best re- medy, as the ca terp illars are voracious eaters. They pupate beneath the soil and remain there until the next season. Belonging to the genus Exoascus, one species of which has already been noticed as injurious to Peach-trees, causing Leaf- Curl, is a fruit-deforming kind, E. pruni. This is responsible for the Pocket Plums or Bladder Plums. The latter is a most appropriate name, as affected Plums resemble a blown-out bladder. The disease attacks the young fruit, which undergoes modifications quite deforming it and rendering it useless. Such Bladder Plums are tough, wrinkled, greenish-yellow, or reddish and stone- less, and in late summer are covered with a glaucous powdery substance, by means of which the disease is spread. Unfor- tunately, the mycelium is of perennial duration, and therefore it is not sufficient to destroy the Bladder Plums. Professor Mar- shall Ward recommends, in his excellent little work upon " Plant Diseases," to prune back to the old wood. Spraying with Bordeaux Mixture two or three times at intervals early in the season would act as a preventive to this and many other fungoid Fig. 6
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