. New elementary agriculture for rural and graded schools; an elementary text book dealing with the plants, insects, birds, weather, and animals of the farm . is life and opportu-nities. Grasshopper Diseases, like the sicknesses of other ani-mals, often cause the death of thousands of these insects;but we have not yet been able to spread these diseasesartificially so as to make them of much use in killing thehoppers. We must destroy their eggs in fall, duringwinter, or early spring, by disking or harrowing theground. We must catch the young and full-growninsects with hopper dozers and other ma
. New elementary agriculture for rural and graded schools; an elementary text book dealing with the plants, insects, birds, weather, and animals of the farm . is life and opportu-nities. Grasshopper Diseases, like the sicknesses of other ani-mals, often cause the death of thousands of these insects;but we have not yet been able to spread these diseasesartificially so as to make them of much use in killing thehoppers. We must destroy their eggs in fall, duringwinter, or early spring, by disking or harrowing theground. We must catch the young and full-growninsects with hopper dozers and other machines, or elsewe must by some other means prevent them fromdestroying our cultivated plants and grasses that growwild upon the prairies. Crickets, Katydids, and Other Relatives of Locusts.—These insects, like the short-horned grasshoppers de-scribed above, are also plant-eaters. But they hardlyever become so numerous as to destroy whole fields ofgrain or the grasses of the prairies and meadows. Infact, they seem to be more or less necessary to com-plete our idea of a country picture. Their thrillingmusic seems to be ever present during the warm days. Pig. 31. Angular-winged katydid. 74 NEW ELEMENTARY AGRICULTURE and delightful evenings of late summer and early insect music is one of the most characteristic fea-tures of country life, and we would miss it greatly wereall these insects to die and no longer chirrup their songsof love. They are the chief musicians of the insectworld and they appeal to most of us who have beenendowed with sentimental natures, much as do birds. As mentioned on a formerpage, in these insects we findfully developed ears, whichare located on the front legsjust below the knee, or feelers, or horns,are nearly or quite as longas their bodies, hence theymay be called long-hornedto separate them from the short-horned grasshoppei ireferred to above. Then, too,the females are furnished witha sword-like egg-layer. Thesemay be separated i
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagriculture, bookyear
