The Honourable Mr. Morrison mentions (Com pendious Summary) that cargoes of salt cod were brought to China from England, but only for two years, as it was found to breed an insect which bored through the ship's timbers.
The ravages of the Doorkhee or Durkhi insect are very destructive to the young indigo plant.
Gryllotalpa vulgaris is the mole cricket.
The Goorghoorgah or Goorghooriah, HIND., occurs in the temperate and tropical regions of the Old World ; it is of nocturnal habits, and is a destructive creature to all vege table products. In Dinapore and Bankapore it attacks the young poppy plant in November and December.
The most troublesome of the mosquitos on the coast of Ceylon is the Culex laniger.
Two species of Giyllus, called ghudya and phunga iu Hindi, in Lower Bengal attack the young poppy plant in November and December.
Of the locusts which at intervals devastate some countries, the Acrydium (Gryllus) migratorium is that of Africa and the south of Asia, and G. gre garius that of Sinai. The migratory locust, Acry dium (or JEdipodium) migratorium, which occurs in Africa and the south of Asia, is greenish, with transparent elytra of a dirty grey, whitish wings, and pink legs. They have the power of inflating
themselves with air, and of travelling about eighteen miles a day. They are bred in the deserts of Arabia and Tartary. Cajaput oil pro tects books.
Insects are easily killed by kerosine emulsion. Pure kerosine, 1 gallon ; condensed milk, pint ; water, 3 pints. Mix the water and milk before adding the oil, and churn until the whole solidifies and forms a butter. In using it, dilute the butter with from 12 to 16 times its weight of water, and then apply immediately. If allowed to stand, the butter separates and rises to the surface.— Bengal As. Soc. Journ., No. xxii. p. 426 ; Bennett ; Buckland's Curiosities of Natural History, 1857 ; English Cyclopxdia ; Figuier, Insect Life ; Hooker, Himalayan Journal; Mr. Hope in Madras Lit. Soc. Journ., 1840; Kirby and Spence ; Huxley, Intro duction to the Classification of Animals ; O'Shatqh nessy, Mat. Med. ; Boyle, Mat. Med. ; Boyle on the Productive Resources of India ; Tennent's Sketches of the Natural History of Ceylon, pp. 442-446; Tennent's Ceylon; Thompson on Insects destructive to Woods and Forests ; Wallace, Trop ical Nature ; Crawfurd's Dictionary ; Ceylon Ob server.