On the 20th December 1893, or thereabouts, you paid to Messrs. Robarts, Lubbock & Company, to be placed to the credit of the Royal Society's account, a sum of £24-14-11. I cannot make this correspond with any annual payment, and as yours letter to Messrs Robarts gives no particulars, I must apply to yourselves to ask for the explanation of this payment.
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.