Abstract :
The current status and present trend of research in various subdivisions of the general field of electrical insulation were indicated in the 22 progress reports informally presented at the 13th annual meeting of the conference on electrical insulation of National Research Council held in Washington, D. C., for three days beginning October 31, 1940. A brief report of the general features of that conference was presented on page 524 of the recent December issue. Through the generous and effective assistance of Secretary Thorstein Larsen (A ´34) of the conference, ELECTRICAL ENGINEERING presents on this and the following three pages a digest of author-abstracts which reflect the highlights of the various informal technical reports.
