Discussion at Winter convention

K. B. McEachron: In discussing the paper by Messrs. Cox, McAuley and Huggins, and also the paper by Mr. Cox, I wish to raise a question concerning the conclusions. It does not seem to me that the data given support the definite conclusions drawn. For instance, the first conclusion in the Cox, McAuley and Huggins paper states that the voltages due to lightning are unidirectional, and that the cloud which produces surges is of negative polarity resulting in positive induced voltages and negative direct-stroke voltages. The evidence which we have at the present time supports this conclusion but sufficient evidence to make such a positive statement appears to be lacking.