Discussion on “studies in lightning protection on 4000-volt circuits” (Roper), “experience and recent developments in central station protective features” (Pollard-Lawson), “protection of high-voltage distribution system

E. E. F. Creighton: Of Mr. Roper´s paper I will say, first, that I think it is a piece of scientific work on a magnificent scale of very great value to the electrical industry. It differs from most of the work, in that it is finished. The whole electrical industry is benefited, new principles have been proved and some principles have been disproved and discarded. There will be a chance to get better service on the part of those who wish it, and better lightning arresters. From my own standpoint I wish to acknowledge a great benefit derived from Mr. Roper´s work in that it made possible to choose between several factors of design of lightning arresters, and thereby improved the product for everybody.