FESTS 87 



with blisters, which are at first pale green, and then 

 red : the fruitlets, also, are similarly attacked. The 

 blister shows on the upper side of the leaf, and there is 

 a central hole in the portion below the leaf, by which 

 the mite passes in and out. Similar blisters are pro- 

 duced by the pear scab, but these have no central 

 opening. The attacked fruitlets die. The mite 

 hibernates under the bud-scales. 



Remedies. — In late winter spray with a caustic 

 emulsion; an emulsion containing 10 per cent, of 

 paraffin, without any caustic soda, has also been found 

 to be effective. In early summer, if the leaves show 

 the presence of an attack, spray with weak emulsion. 

 Often a few leaves only, towards the base of the trees, 

 are attacked ; these may be picked off and burnt. 

 Recent work in America has shown that this pest can 

 be destroyed by lime-sulphur-salt washes, in late 

 autumn or early spring. 



Wood Leopard Hloth {Zeiczera cescuIi). — The cater- 

 pillars feed on the young wood of the cherry, pear, 

 apple, plum, and other trees. The moth is 2 to 

 2| inches in spread, the wings white, with numerous 

 metallic black spots. The eggs are laid in July in 

 crevices in the bark, and are oval and orange-coloured. 

 The caterpillars, which soon hatch out, are iv inches 

 long when mature, yellowish-white, with black spots 

 and black markings near the head and tail. They feed 

 for two years, during which time they burrow into 

 the wood. 



Remedies. — Cut off attacked branches, which are 

 recognised by the flagging of the leaves. 



