. Fruit culture in foreign countries. Reports, from the consuls of the United States, on fruit culture in their several districts, in answer to a circular from the Department of State. Fruit-culture. THE OLIVE IN ITALY. 657 street at New Orleans—is also another dangerous insect to the precious plant. The same shown enlarged in Pig. 33 is destroyed witli lye of riG. 33. The Psylla, when in the state of larva, encircles itself in a sticky whitish matter, and causes the jjlant to droop. This disease is generally called here malattia del cottone (cotton dis- ease), and the most energetic re
. Fruit culture in foreign countries. Reports, from the consuls of the United States, on fruit culture in their several districts, in answer to a circular from the Department of State. Fruit-culture. THE OLIVE IN ITALY. 657 street at New Orleans—is also another dangerous insect to the precious plant. The same shown enlarged in Pig. 33 is destroyed witli lye of riG. 33. The Psylla, when in the state of larva, encircles itself in a sticky whitish matter, and causes the jjlant to droop. This disease is generally called here malattia del cottone (cotton dis- ease), and the most energetic remedy is to treat the plant by cutting oft all the infected branches. Finally, theCossoperdilegno(Cossuslegniperda) is the mostterriblein- sect, damagingthe wood. Thecossuswheniniigrubstateisbloodish-red on top and white-yellowish under. The butterfly deposits an egg in the bark, wherefrom grows a grub, which bores into the tree—into the heart of the tree—killing it at once; if the tree is young, the cossus is assisted in its work of destruction by a special liquor of a strong odor secreted by the insect itself, which softens the wood fiber. This terrible insect is difiicult to be destroyed. It lives three years in a state of larva, and the butterfly is found in the spring and summer; consequently at such a time it is necessary to use a certain activity to destroy it. The nat- uralist Professor Boisduval advised the municipal authorities of the infected places to " offer one lira of reward for every cossus caught as a good remedy to destroy the ; Diseases.—Besides the said insects there are also diseases to which the olive plant is subject, such as (1) II Chiodo oRogna (the nail or scab) the cause of which is by some growers attributed to insect punctures, and by others to the imperfect ass'miliation of the juices, which instead of alimenting the plant, accumulate at certain points, producing deformed excrescences, as in Fig. 34, n, a, a, a. II Chiodo (nai
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