Copy letter from Robert William Frederick Harrison, to William Botting Hemsley, Fellow of the Royal Society Harrison explains the block of the map cannot be altered as specified by Hemsley, as the expense would be equivalent to the price of a new block, so he need not convert it from feet to metres. He states that millimetres and centimetres are the preference of their printers, but that the terminal "s" is out of place in Latin, except in ablative cases. 25 April 1907