Medical and Veterinary Entomology: A Textbook for Use in Schools and Colleges, as Well as a Handbook for the Use of Physicians, Veterinarians and Public Health Officials

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MacMillan, 1915 - 393 páginas
 

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Página 114 - The conclusions drawn from these experiments were: "1. The mosquito — Culex fasciatus — serves as the intermediate host for the parasite of yellow fever. "2. Yellow fever is transmitted to the nonimmune individual by means of the bite of the mosquito that has previously fed on the blood of those sick with this disease.
Página 140 - Ordinance shall be guilty of a misdemeanor, and upon conviction thereof shall be punished by a fine of not less than five ($5.00) dollars nor more than five hundred ($500.00) dollars, or by imprisonment in the County Jail for not less than six (6) months, or by both such fine and imprisonment.
Página 202 - District shall cause all such manure to be removed from the premises at least twice every week between June...
Página 400 - This important new work is based on the unique methods of the Pediatric Department of the Harvard Medical School. By these methods the food is fitted to the baby and not the baby to the food, while all procedures are presented for a definite reason and on a scientific basis. There has, up to the present, been no book in English presenting in detail the physiology of digestion and metabolism in infancy — which must form the basis of all scientific and rational infant feeding — and none describing...
Página 376 - II. Cells cylindrical, longer or shorter, and only dividing in one plane, and elongating to about twice the normal length before the division. a. Cells straight, rod-shaped, without sheath, non-motile, or motile by means of flagella. 2.
Página 114 - ... 9. A house may be said to be infected with yellow fever only when there are present within its walls contaminated mosquitoes capable of conveying the parasite of this disease. 10. The spread of yellow fever can be most effectually controlled by measures directed to the destruction of mosquitoes and the protection of the sick against the bites of these insects. 11. While the mode of propagation of yellow fever has now been definitely determined, the specific cause of this disease remains to be...
Página 202 - ... or more horses, mules, or cows, shall report that fact to the health officer in writing, within thirty days after this regulation takes effect, giving his or her name, and the location of such stable, and the number and the kind of the animals stabled therein; and thereafter every person occupying any building, or any portion of a building, in the city of Washington, or in any of the more densely populated suburbs thereof...
Página 205 - ... feet beyond the building line. The walls must be substantial and watertight, with stone or iron coping, bedded in cement, set fair with the surface of the alley. They must be covered with heavy wrought-iron doors, flush with the alley pavement or surface, sufficiently strong to carry heavily loaded carts or other vehicles, and provided with ventilation by means of a flue inside of the stable and extending above the roof of the same, and they must be drained by sewer connection, as directed by...
Página 228 - Screening of sick-rooms against the stable-fly and other flying insects is a precaution which should be added to those directed against contact infection, but not substituted for them. 4. The measures used in suppressing the house-fly are not applicable to the control of the stable-fly owing to its different breeding...
Página 308 - ... should be multiplied by such a number as to furnish the required amount. For example, if it should be convenient to mix 10 gallons at one time, the quantities would have to be multiplied by 2, and if 15 gallons were desired, they would have to be multiplied by 3, and so on. In preparing the emulsion the soap should be shaved up and placed in a kettle or caldron containing the required amount of water. The water should be brought to a boil and stirred until the soap is entirely dissolved.

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