Copy letter from Herbert Rix, to Professor Haddon, Royal College of Science, Dublin 'Dear Sir, I doubt whether you will see Prof. Foster [Professor Michael Foster] here if you call next Thursday as our session came to an end yesterday, and I know of no reason for his coming up to town next week. At any rate, you had better write to him at Shelford, Cambridge, to make an appointment. I am, yours truly H Rix Asst. Sec. RS [Assistant Secretary, Royal Society]'. 3 July 1891