Agriculture for beginners . ^bee often la\-s as many as4(xx> eggs in twent\-four hours. A singie house fly laysbetween loo and 150 eggs in one day. The mosquito lays. eggs in quantities of from 200 to 400. The white ant oftenlays 80,000 in a day, and so continues for two years,probably lajing no less than 40,000,000 eggs. In onesunmier the bludxitde fly could have 500,000,000 de-scendants if they all Uved. The plant louse, at the end ofthe fifth brood, has laid in a single year enough e^s to ORCHARD. GARDEN. AND FIELD INSECTS 151 produce 300,000,000 young. Of course ever)- one knowsthat, ow
Agriculture for beginners . ^bee often la\-s as many as4(xx> eggs in twent\-four hours. A singie house fly laysbetween loo and 150 eggs in one day. The mosquito lays. eggs in quantities of from 200 to 400. The white ant oftenlays 80,000 in a day, and so continues for two years,probably lajing no less than 40,000,000 eggs. In onesunmier the bludxitde fly could have 500,000,000 de-scendants if they all Uved. The plant louse, at the end ofthe fifth brood, has laid in a single year enough e^s to ORCHARD. GARDEN. AND FIELD INSECTS 151 produce 300,000,000 young. Of course ever)- one knowsthat, owing to enemies and diseases (for the insects haveenemies which prey on themjust as they prey on plants)comparatively few of the in-sects hatched from theseeggs lixe till they are number of insectswhich are hurtful to crops,gardens, flowers, and forestsseems to be increasing eachseason. Therefore farm bo\sand girls should learn torecognize these harmful in-sects and to know howthey live and how they maybe destroyed. Those whoknow the forms and habits of these enemies of plants andtrees are far better prepared to fight them than are thosewho strike in the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
