. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. ust be by the physician ; but it is the business of the intelligent agriculturist to make himself acquaintedwith such as are injurious or hurtful to the animals ami plants, upon which, the success of his operationsmainly depends : for there are as yet no agricultural physicians, to whom the farmer can apply for adviceor Information when
. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. ust be by the physician ; but it is the business of the intelligent agriculturist to make himself acquaintedwith such as are injurious or hurtful to the animals ami plants, upon which, the success of his operationsmainly depends : for there are as yet no agricultural physicians, to whom the farmer can apply for adviceor Information when his labours are counteracted by insect devastators. We shall therefore briefly noticethe domesticated animals and cultivated plants most subject to these injuries, pointing out the mostefficient modes by which they may be checked. Tin- horse. The principal foes to this noble animal are the horse-bee (ffistrus equi) and gad-fly((K. hoemorrhoidalis). The first deposits its eggs on such parts of the body as are liable to be licked bythe tongue ; and the animal, unconscious of what it is doing, thus conveys its enemy into its stomach ; theyoung are there nourished, and become whitish rough maggots ( c), which are known by. the name of bots. They attain their full size about the latter end of May, and are voided by the anusfrom that time until the end of June. On dropping to the ground, they find out some convenient retreat,where they change into a chrysalis ; and in six or seven weeks the fly appears. The female (6) is distin-guished from the male (n) by the lengthened shape of her body. The inside of the knee is chiefly selectedfor depositing her eggs, which will frequently amount to four or five hundred on one horse. The otherspecies (ffi. ha?morrhoidMis /,.) is still more troublesome; it deposits its eggs upon the lips, and causes ex-cessive ami distressing uneasiness to the animal. Mr. Bracy Clark, who has investigated the history 01these insects with gr
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1871
