Original sentence: Edward Levett Darwin (12 April 1821–23 April 1901), author under the pen-name High Elms of Gameskeeper's Manual, a guide for gamekeepers on large estates which shows keen observation of the habits of various animals
Edited sentence: Edward Levett Darwin (12 April 1821 – 23 April 1901), author under the pen-name High Elms of Gameskeeper's Manual, a guide for gamekeepers on large estates which shows keen observation of the habits of various animals