. The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists . 1306. The cabbage butterfly. 1038 DISEASES AND INSECTS DISEASES AND INSECTS. 1307. ance, but the nymphs gr
. The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists . 1306. The cabbage butterfly. 1038 DISEASES AND INSECTS DISEASES AND INSECTS. 1307. ance, but the nymphs gradually acquire the charactersand structures of the adult. How they eat.—To the horticulturist, the mouth-parts of an insect are its most important organs orappendages. The mouth-parts are built on two very different plans,rjrasshoppers,leetles, cater-pillars and grubshave two pairs ofhorny jaws, work-ing from side toside, with whichthey bite or chewoff pieces of their Imago of a teat-caterpiUar. ^0°^, that then pass into the lood-canal for digestion (Fig. 1312). The scale insects (), plant-Uce, true bugs (Fig. 1314), mosquitos andothers have these jaws drawn out into thread-like organs,which are worked along a groove in a stiff beak orextended under-lip. Such insects can eat only liquidfood, which they suck with their beak-like insect places its beak on the surface of the plant,forces the thread-like jaws into the tissues, and thenbegins a sucking operation, which draws the juices ofthe plant up along the jaws, and the groove in
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Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectgardening
