1. The pear oyster scale is very injurious, especially on walls, if not checked at an early stage. The covering of the female is like a small oyster scale, hence the name. Scrape off any rough bark in winter, and apply the alkali or one of the other washes as a preventive. In May and June affected parts might be brushed with ¼ lb. of soft soap in a gallon of water. Tobacco or lime water might also be applied. Paraffin largely diluted may be used, but is dangerous in excess. Messrs Rivers in "The Miniature Fruit Garden" (p. 144) say: "Washing the parts affected with a mixture of soot, lime and sulphur will remove the roughness and restore the tree to health; the above mixed with skim milk is more enduring." As a believer from experience in soot and lime, I prefer this receipt, if the trees were not washed in winter. 2. The Blister Moth makes brown blisters on the leaves. It may be kept from laying eggs on the tree by syringing occasionally with soap-suds. Spraying with Paris Green just after the fruit is formed will do good. Half an ounce of best paste to 10 or 12 gallons of water, with some fresh lime added, will suffice for small gardens. Spray only in fine weather just after the petals have fallen. Paris Green is arsenic, and may poison bees if used too soon. The sprayer should avoid breathing over the mixture when making it up, should use gloves, work from windward, and not allow any spray to reach his flesh. A second spraying for this and other insects is often useful. Blundell, Spence & Co. (Ltd.), Hull, supply good paste. Price ½ lb. 1s., less for larger quantities. See also No. 3. 3. The Pear Leaf Mite causes small blisters on the leaves, but not the tunnels or galleries of the Blister Moth. It winters in the bud scales, and emerges in the spring. If the trees are washed and syringed, the attacks will be lessened. In (2) and (3) collect the blistered leaves as soon as seen, burn them and spray or syringe at once. Miss Ormerod recommends a dilute paraffin emulsion sprayed over infested leaves. Dissolve ¼ lb. of soft soap in a gallon of water, add this while boiling to two gallons of paraffin, churn the whole with syringe or small pump for ten or fifteen minutes to make a perfect mixture. For spraying add 12 gallons of water to each gallon of the emulsion. Stir well while spraying, and try the mixture on a branch or two lest it be too strong; if so, add more water. This emulsion is good for the Blister Moth and the Slug-worm.