In answer to your letter of May 28th, I am instructed by the Secretaries to inform you that no paper can be submitted to the Society or published in their "Transactions" ['Philosophical Transactions of the Royal Society'] unless it is communicated by a Fellow of the Society. Your manuscript is, therefore, returned (registered) by to-day's post.
I am, yours truly,
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.