Your estimate (£132) for Prof. Bower's plates is accepted but on condition that the Author is satisfied with the work of one plate, which he desires to have submitted to him before the others are put in hand. Is there any difficulty in doing one plate first? and could you let me have it by the last week in his month? as Prof Bower will be here then.
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.