We are sending you for execution, as per your estimate of Sept. 2, two plates. Heape, Phil. Trans. ['Philosophical Transactions of the Royal Society']. Will you please put them in hand without delay and oblige me by acknowledging receipt & at the same time letting me know about when we may expect to receive proofs. I believe you know our size for Phil. Trans. ['Philosophical Transactions of the Royal Society'] (Royal 4to [quarto]) but if you have any uncertainties or queries please consult me.
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.