As soon as I hear from the Secretaries that you have answered the suggestion sent to you with their notice as to the printing of the paper, I shall be glad to put the illustrations in hand. ^Meanwhile^ to save time, will you at once let me know whether the very small squares in the two diagrams are to be shown, and whether, in your opinion, the diagrams will bear any reduction? If reduced by one-third I think they would go into the text; if full size, I suppose we must have a folding lithographic plate. Any suggestions upon this point will be attended to.
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.