Scientist's Search for Effective Means of Destroying Mosquitoes By Arthur de C. Sowerby, ¥.2.8.
Lhe following article dowds. with the writer's recent investiydtions upon the fishes around Shanghai ith w view to discovering which, if any, is suitable For use in the des~ truction of mosquito larvae.
As a result of his investigations, he has discovered that the-ssu-called yurulise fish is eminently suited for the pur pose, and strongly recommends the Municipal authorities to carry on the investigation with a view to the wholesale use of this little fish.
During the spring and early sumer of the present year the writer has been experimenting with various species of small fish commonly found in the ponds and streams round Shanghai, with a view to discovering which, if any, may be used with advantage in the campaign agains: mosquitoes, In Central and South America the destruction of mosquito larvae has been carried out very successfully by introducing certain species of small fish native to that country into all standing water. For instance, it was found that during a severe outbreak of yellow fever in Peru, the introduction.of these small fish into the various species, the common eel, young serpent-heads, loach of! various species, the Chinese paradise fish, and the young of other species, whose names need not concern us here. These were kept in spacious glass jars or aquaria, the contents of which were made as closely similar as possible to the natural surroundings of the
Text read from the printed page and cleaned; old type leaves the occasional error.