Letter from [Hugh Lonbourne] Callendar, Board of Education, South Kensington, London, to [Joseph] Larmor Callendar explains his reason for not wishing to be a referee for Cuthbert's paper, was that Cuthbert was an old student of his, but describes it as an invalid 'objection'. He suggests the paper would be suitable for the enlarged Proceedings. 14 November 1904