Copy letter from Robert William Frederick Harrison, to Arthur Hill, 22 Georges Street, Cork 'Dear Sir, In reply to your enquiry, I find that a Rev Thomas Parkinson, M.A. Fellow of Christ's College, Cambridge, was elected a Fellow of the Royal Society on February 23, 1786. In his certificate he is described as "a gentleman well versed in Mathematics and Natural Philosophy". I am, faithfully yours, Robt [Robert] Harrison Assistant Secretary R.S. [Royal Society]'. 30 October 1907