I beg leave to acknowledge receipt of your letter (T.L. 54) of 3rd inst. [instant], and I have to inform you that the total number of the Volumes of the Catalogue of Scientific Papers which have been delivered here, agrees with the total of the Volumes as specified in your letter.
I have the honour to be, Sir, your obedient servant,
Asst Sec RS [Assistant Secretary, Royal Society]'.