Read it through once

‘We must be active, Oliver, and not give way to useless grief,’ said Mrs. Maylie, laying her finger on her lip, as she looked steadily into his face; ‘this letter must be sent, with all possible expedition, to Mr. Losberne. It must be carried to the market-town: which is not more than four miles off, by the footpath across the field: and thence dispatched, by an express on horseback, straight to Chertsey. The people at the inn will undertake to do this: and I can trust to you to see it done, I know.’