. An address upon farm pests, including insects, Fungi, and animalcules . calculation. In every pond and ditch, and almost everypuddle, in vegetable infusions, in paste and vinegar, on honey,sugar, and all sweet substances, on almost every leaf and flower,even on those fungi only visible through the microscope, and inrivers, seas, and oceans, these creatures are found in such num-bers and varieties as to almost exceed belief. The shapely limb and lubricated joint,Within the small dimensions of a point,Muscle and nerve, miraculously spanHis mighty work, who speaks, and it is done,The invisible
. An address upon farm pests, including insects, Fungi, and animalcules . calculation. In every pond and ditch, and almost everypuddle, in vegetable infusions, in paste and vinegar, on honey,sugar, and all sweet substances, on almost every leaf and flower,even on those fungi only visible through the microscope, and inrivers, seas, and oceans, these creatures are found in such num-bers and varieties as to almost exceed belief. The shapely limb and lubricated joint,Within the small dimensions of a point,Muscle and nerve, miraculously spanHis mighty work, who speaks, and it is done,The invisible in things scarce seen revealedTo whom an atom is an ample field. Of these wonderful creations, I will only bring forward a fewexamples. THE MITE FAMILY. Comparatively few naturalists have studied up the habits andpeculiarities of the mite family. But few of our readers in nat-ural history text-books learn from their pages anything definitein relation to them, either regarding the affinities of these hum-ble creatures, their organization, or frequently singular meta- 67. Fig. 34-Young Ixades A Ibipictus. morphoses. We shall, therefore^ only mention a few typicalforms which we have had the pleasure of examining. Mites are lowly-organized Arachneds. This order is dividedinto four families ; viz., the scorpions, spiders, harvestmen, andmites ; the scientific name ofwhich is Acarma. They have arounded oval body, without theusual division between the headand abdomen observable in spi-ders ; the head, thorax, and ab-domen being merged in a singlemass. When mature, there arefour pairs of legs, and the mouthpart consists, as seen in the ad-joining figure of a young tick,of a pair of maxillge ic), which,in the adult, terminate in twoor three jointed feelers; a pair of mandibles (^), often covered with several rows of fine teeth,and ending in three or four larger hooks, and a serrated labium{a). These parts form a beak, which the mite can insinuateinto the flesh of its host, upon the bloo
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