The Council of the Royal Society have decided to accept your offer placing the manuscript of the index to the "Philosophical Transactions" ['Philosophical Transactions of the Royal Society'] at their disposal at the rate of £5 per thousand titles. The Treasurer desires me to write and ask you how many thousand titles the Index contains, in order that we may ascertain the probable cost of printing.
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.