The letter is dated 28 February 1887, at 10 Bright['s] Crescent, presumably in Edinburgh. It appears to begin, 'Dear Prof. Dunn'. Geikie regrets that he 'shall be unable to attend the Council meeting for t. night - I am not allowed to go out in the evening'. He remarks how it is 'a terrible loss to the Society in the death of our dear friend Mr. Gray!' It finishes with autograph signature, James Geikie.
There is also a printed outline map of Scotland showing principal directions of ice-flow.
Both the map and the letter (which had been pasted to the inside cover) had been extracted from a copy of Geikie's Great Ice Age and its relation to the antiquity of man (1874).