. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. oil of pennyroyal, and sweet oil—must be resorted to for man, while fish oil, with an admixture of crude carbolic acid or creo- sote, will be found effective lor animals. Smudges are often used where buffalo-gnats are abundant, and the stock soon learn that in or near the smoke ex- emption from attack ma}' be secured. Where c, the water of infested streams riG. 3gi. is deep, undue multiplication is frequently chargeable to an accumulation of logs or other
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. oil of pennyroyal, and sweet oil—must be resorted to for man, while fish oil, with an admixture of crude carbolic acid or creo- sote, will be found effective lor animals. Smudges are often used where buffalo-gnats are abundant, and the stock soon learn that in or near the smoke ex- emption from attack ma}' be secured. Where c, the water of infested streams riG. 3gi. is deep, undue multiplication is frequently chargeable to an accumulation of logs or other IM^gl ^"^^^^^^li^^^^^^ material at certain points, af- [y^ (7^ fording suitable locittions for .•J«*\ j.|^g development of the gnat larvte. In such cases much good may be accomplished and sometimes practical ex- emption may be secured by cleaning out the streams and thus destroying the breeding- places. Stationary rafts of logs should not be allowed, and the surface should be kept as free as possible of anything to which the larvae can attach themselves. The "horse-flies," or Tabanidce, comprise another set of troublesome creatures, of medium or large size. They have short, broad heads, enormous eyes, and short, though many- jointed, feelers. The abdomen is oval, a little flattened, and the body is convex and powerful. The mouth parts are well developed, consisting of a series of five sharp-pointed lancets so rigid that they readily pierce the skin and draw blood almost as soon as they touch. These flies frequent woods or the edges of woodland, sometimes low meadows or marshy places, and occa- sionally prove serious pests to stock. They are often trouble- some in woody roads, because with three or four of the large black flies buzzing about, horses may be driven almost frantic. Similar species occur in great numbers along the sea-shore, vv^here they are known as " ; In some localities they are known as "deer-flies," and some
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906
