. Elementary biology; an introduction to the science of life. Biology. 400 ELEMENTARY BIOLOGY exposed in groceries, meat shops, kitchens, restaurants, dining rooms, or picnic grounds. Fhes will visit open wounds or sores on the bodies of animals, and they will visit the excrements of man and other animals. We may thus see what excellent opportunities this animal has not only to collect a varied assortment of bacteria but also to distribute them Fig. 206. A breeding place for house flies The community that saves itself money or trouble by permitting back ^-ards of this kind usually pay
. Elementary biology; an introduction to the science of life. Biology. 400 ELEMENTARY BIOLOGY exposed in groceries, meat shops, kitchens, restaurants, dining rooms, or picnic grounds. Fhes will visit open wounds or sores on the bodies of animals, and they will visit the excrements of man and other animals. We may thus see what excellent opportunities this animal has not only to collect a varied assortment of bacteria but also to distribute them Fig. 206. A breeding place for house flies The community that saves itself money or trouble by permitting back ^-ards of this kind usually pays for its economy and indifference with disease and death. With the econo- mies of motor cars and traction engines must be reckoned the reduction in typhoid fever and other fly-borne diseases From a report made by an army commission as to the causes of epidemic fevers in the army camps during the Spanish-American War, we learn that " flies swarmed over infected fecal matter in the pits and fed upon the food prepared for the soldiers in the mess tents. In some instances where lime had recently been sprinkled over the contents of the pits, flies with their feet whitened with lime were seen walking over the ; We can readily understand why it was that more soldiers were killed by intestinal diseases than by Spanish Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gruenberg, Benjamin C. (Benjamin Charles), 1875-1965. Boston New York [etc. ] Ginn and company
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
