Medical and veterinary entomologyMacmillan, 1915 - 393 sider |
Vanlige uttrykk og setninger
abdomen adult animals Anopheles Anopheline antennæ bacilli bacteria bedbug beetles bite blood body breeding places brown bugs calcitrans California carrier cattle cell cent color commonly cone-nose deposited developed Diptera disease dorsal eggs experiments feeding female fleas flies genus glands habits hairs hatch head Health horse horsefly host house fly human hypopharynx insects intestine kerosene known labium larva larvæ latter legs length lice Linn louse maggots malaria male mandibles manure maxillæ metamorphosis mites molt monkey mosquito mouth Musca domestica myiasis Nuttall occurs ordinarily organs pair palpi parasites period piercing plates poliomyelitis posterior present proboscis pupa pupæ pupal roach salivary scales segment skin species spiracles spots stable fly stage stigmal stomach Stomoxys sucking sulphur temperature thorax tick transmission trypanosomes tsetse fly usually vein ventral wings worm writer yellow fever
Populære avsnitt
Side 110 - 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.
Side 136 - 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.
Side 198 - District shall cause all such manure to be removed from the premises at least twice every week between June...
Side 372 - II. Cells cylindrical, longer or shorter, and only dividing in one plane, and elongating to about twice the normal length before the division.
Side 110 - ... 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...
Side 198 - ... 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...
Side 201 - ... 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...
Side 224 - 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...
Side 304 - ... 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.