National Geographic : 1948 Aug
Weather Knowledge Helps Science Fight Malaria and Yellow Fever Into the histories of disease-bearing mosquitoes go detailed reports on weather in the areas where they thrive. Rockefeller Foundation researchers set up ob servation posts to collect data. Here a laboratory worker checks a thermo graph, which keeps a continuous record of air temperature on the forest floor. Mosquitoes, Too, Like Air Conditioning Scientists rigged this device tokeep their captives happy ondry, hotdays. From a perforated pipe waterflows down aburlap screen. The electric fan blows moist air through the cloth into aroom where laboratory "skeeters" live in cages. Some like it hot;others prefer itcool and damp (page 268).