Identifier: endemicdiseaseso00dead (find matches)
Title: The endemic diseases of the southern states
Year: 1916 (1910s)
Authors: Deaderick, William H. (William Heiskell), b. 1876 Thompson, Loyd Oscar, b. 1882
Subjects: Disease Outbreaks
Publisher: Philadelphia and London, W. B. Saunders company
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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een employed forthe destruction of mosquito larvae. The aniline derivativesare valuable, especially that known as Lardcide, which de-stroys also fish and other forms of Hfe which may be usefulin kilhng larvae. The same objection applies to Fhinotas Oil,a cresol combination, and saprol, which are effective larvi-cides. Formahn, corrosive sublimate, carbolic acid, and lysolare too slow in their effect upon larvae to be of practical value. Permanganate of potash has proved disappointing in all trialsmade of it. Where it is not feasible either to drain or oil a breeding poolthe introduction of small fish has been practised with success.Certain species of fish prey upon the eggs, larvje, and pupae ofmosquitoes, and even upon adults when about to emerge fromthe pupal shell or when in the act of oviposition. The commontop minnows (Gambusia and Fimdulus) and the sun-fish areexcellent for this purpose. The former being very voraciousand top feeders are especially adapted for the destruction of
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—Breeding pools along the roadside. anopheles larvae. They are fast breeders and resist the dry-ing of pools in a remarkable degree. Sticklebacks, gold-fish,and roach are also larvivorous. It is doubtful whether thecommon German carp, on account of its feeding habits, is ofany use for this purpose. The tadpole is valueless for thedestruction of larvae. Ducks destroy many larvae. Thelarvae of the dragon fly, the water boatman and the hair wormdevour mosquito larvae. The natural enemies of adult mosquitoes are few and prac-tically insignificant. Dragon flies, night-hawks, whip-poor-wills, swallows, bats, and certain species of lizards destroy a l88 ENDEMIC DISEASES OF THE SOUTHERN STATES number and some are killed by parasitic mites and a smallsuctorial fly. An ideal prophylaxis destroys the breeding pools or theaquatic stages of mosquitoes, but remedies against the adultinsects are sometimes necessary. For this purpose a greatvariety of substances have been tried. One of the most pri

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