The letter of 13 May is incomplete (2pp. only); the letter of 28 July is incomplete (2pp. only); the letter of 10 April is 1p. only, lacks beginning and end and has a note 'From E.A.M. to G.M. 10th Ap. 1936' in the hand of Mrs. K. Milne.

The letter of 13 May describes controversial meetings of the Royal Astronomical Society; the letter of 28 July describes Milne's new ideas on 'structure of dynamics'; the letter of 19 April refers to his papers on the inverse square law of gravitation ( Proc. Roy. Soc. 160, 1937) of which Milne says 'I really think it would have interested old Newton'.