. Elements of agriculture, southern and western. Agriculture; Agriculture. 128 ELEMENTS OF AGIUCULTURE and dengue fever are carried from one person to an oilier by different species of mosquitoes. In biting a person having malaria, the mosquito gets the germs of the dis- ease, carries tliem away, and injects them into the next person bitten. Since the discovery of this great truth, people, by protecting themselves against mosquitoes, have good health even in the great river bottoms of the South. Typhoid fever is carried sometimes by the house fly. An insect called the tsetse fly of Africa carr
. Elements of agriculture, southern and western. Agriculture; Agriculture. 128 ELEMENTS OF AGIUCULTURE and dengue fever are carried from one person to an oilier by different species of mosquitoes. In biting a person having malaria, the mosquito gets the germs of the dis- ease, carries tliem away, and injects them into the next person bitten. Since the discovery of this great truth, people, by protecting themselves against mosquitoes, have good health even in the great river bottoms of the South. Typhoid fever is carried sometimes by the house fly. An insect called the tsetse fly of Africa carries the dreadful sleeping sickness of that country. It is quite likely that insects play a more important part in the carrying of the germs of human diseases than we yet know. The Boll Weevil. — This insect pest came into South- west Texas many years ago from Mexico, and has spread. 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 Welborn, W. C; Ness, H; Sanborn, Charles Emerson, 1877-; Marstellar, R. P. New York, The Macmillan company
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