MosquitoesMcClure, Phillips & Company, 1902 - 241 pages |
Common terms and phrases
adult female Anopheles larvæ Anopheles maculipennis Anopheles punctipennis antennæ Author's illustration bite blood body Brakeley breathing breed breeding-places breeze creosote oil Cuba Culex pipiens Culex pungens Desv disease drainage enormous numbers experiments fact feed feet fish genus genus Anopheles genus Culex hatched hibernate insects interesting Jersey kerosene known land large number Larva Larva of Anopheles Larva of Culex larvæ and pupæ larvicide live Long Island malaria male mosquitoes marsh Matagorda Bay ment miles minutes mosqui mosquito larvæ mouth-parts nearly number of mosquitoes observations palpi parasite petiole pitcher plants poison ponds pools proboscis Psorophora ciliata pupa pupal quitoes rain-water says scales screen seems seen side sollicitans species of Culex specimens Staten Island Stegomyia fasciata sucking summer of 1900 surface swarms Theobald thorax tion toes Toxorhynchites Tropical warm-blooded weeks wind wing wrigglers writer yellow fever yellow-fever
Popular passages
Page 126 - ... mosquito bit the infected person before its bite could transmit the disease, and that after this period it maintained its ability to infect the well for at least fifty-nine days. To carry out the experiments more thoroughly, two buildings were erected. One, known as the infected mosquito building, was divided into two rooms by a wire screen partition extending from the floor to the ceiling. The door and windows were screened, but so placed as to give thorough ventilation. All articles introduced...
Page 39 - General Washington told me that he never was so much annoyed by mosquitoes in any part of America as in Skenesborough, for that they used to bite through the thickest boot.
Page 127 - ... 5. Yellow fever can also be experimentally produced by the subcutaneous injection of blood taken from the general circulation during the first and second days of this disease.
Page 125 - Jan. 10, 1901, this building was again occupied by two non-immune young Americans, under the same conditions as the preceding occupants, except that these men slept every night in the very garments worn by yellow fever patients throughout their entire attacks, besides making use exclusively of their much-soiled pillow-slips, sheets, and blankets. At the end of twenty-one nights of such intimate contact with these fomites, they also went into quarantine, from which they were released five days later...
Page 97 - Oulex pungens as is the egg. It differs in structure, in its food habits, and in its customary position- so markedly that it can at once be distinguished with the utmost ease. The larva of Culex, it will be remembered, comes to the surface of the water to breathe, thrusting its breathing tube through the surface layer and holding its body at an angle of about 45 degrees with the surface of the water. While in this position its mouth parts are in motion and it is taking into its alimentary canal such...
Page 127 - ... 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...
Page 82 - He cut out a few of the pitcher plant leaves, stripped them from the core of solid ice that they contained and, looking through it, saw wrigglers imbedded in all parts, in all sorts of shapes; but mostly in a half coil. The temperature had been down to two degrees below zero as registered by a standard minimum thermometer, and radiation probably lowered this even more. A number of leaves were gathered, the cores of ice with all they contained were removed, and the lumps were placed together in a...
Page 55 - The breeding-places seemed to be segregated pools at the end of the pond (the pond itself contained fish) - and post-holes and excavations. These last were numerous, as many buildings were going up. The following practical measures were adopted: (1) Extermination of all the Anopheles found in houses by a party of men sent out for the purpose, and this was followed by a systematic introduction of screens in windows and doors ; (2) Filling in of the smaller breeding-places and...
Page 127 - ... 3. An interval of about twelve days or more after contamination appears to be necessary before the mosquito is capable of conveying the infection.
Page 54 - About the same time mosquitoes that had bitten a patient suffering with malaria in Rome were sent to Liverpool, and permitted to bite a son of Dr. Manson, who had never been in a malarious country since he was a child. These mosquito bites were promptly followed by a well-marked infection of the double tertian type. Many other experiments have likewise indicated the transmission of malaria by...