In answer to your note of May 20th, the "Philosophical Transactions" ['Philosophical Transactions of the Royal Society'] for 1822 is out of print. Gentlemen can use this library only by written introduction of a Fellow, but the volume in question can be consulted at the British Museum or at the Guildhall Library, both of which are open to the public.
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.