Abstract :
L. F. Kennedy (General Electric Company, Schenectady, N. Y.): To me the most valuable part of the paper presented by Messrs. Clem and Langguth is the appendix. It indicates, that through the experience gained from several years of use, the industry is now ready to standardize performance, and the user can now specify the class of device he needs from published data. While there may be suggested revisions in this material before its final adoption as a standard, the fact that ratings and performance characteristics have been established, at least tentatively, is indicative of the progress that has been made in the design of potential devices capable of meeting all the requirements in their fields of application. It is certainly to be hoped that with these data available, full use will be made of them for specifications, and that the tentative standards will be followed except where there is conclusive evidence that they are not suitable.
