Longer drafts for papers, some accompanied by comments by R. Naismith and L.J. Ingram, no date

Longer drafts for papers, some accompanied by comments by R. Naismith and L.J. Ingram, no date. N.B. Not all of these refer exclusively to E-layer but deal also with equivalent height, critical frequency, etc. Includes: 7 page sequence ‘The Nature of Electric Wave Reflection', pp.5-6 of a sequence, 8 page sequence, 1937, heavily, corrected and annotated, 'Some Notes on the interpretation of P’f records’.