Shooing The Insects -- Wartime researchers, working to discover an effective insect repellent for use in the Malarial regions of the Pacific, brought forth a new compound called Ethyl Hexanediol. The repellent, a chemical made from alcohol is now being packaged for general consumer use and was exhibited at the National Chemical Exposition here recently. Dr. B.B. Wilkes, of the Mellon Institute, a co-developer of the formula, used a laboratory mosquito cage populated with a 1,000 live mosquitoes