Letter from [John Bretland] Farmer, Imperial College of Science and Technology, Royal College of Science, South Kensington, London S.W, to Mr [Robert] Harrison, [Royal Society] States that the evidence, likely discussed in previous correspondence, and observation are too vague of a nature to base any conclusion and believes phosphorescent millipeds may be the agent, suggesting a letter to be sent to 'Nature' as an option for attracting others who may have observed the same thing. 16 October 1911