Letter from Ronald Winckworth (for John David Griffith Davies), to Richard Whiddington, regarding two papers 'A quantitative study of pleochroic haloes. IV. New types of haloes' by George Hugh Henderson and F W Sparks, and 'A quantitative study of pleochroic haloes. V. The genesis of haloes' by George Hugh Henderson Sectional Committee: Physics The papers were reported to you [Richard Whiddington], and considered the opinion of James Chadwick, who communicated them, to be sufficient. James Chadwick considers them suitable for publication. Can the papers now be passed without referee, or does the recipient wish to look at them himself? Note from Richard Whiddington, dated 4 August 1939, states that the papers can be passed for publication. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 11 August 1939. 3 August 1939