1798, 288; coach shown there to-day not Washington's, 304; Nelly Custis writes from, 306; condition of on Washington's retirement, 307; last months of owner's life spent at, 313; mentioned, 75, 78, 97, 101, 103, 130, 208, 244, 291, 312, 314. Mount Vernon Association, 63. Muddy Hole Farm: described, 62; barrel plough used at, 110; its colored overseer, 183, 205; loss on in 1798, 287. Mules: Washington raises, 137 et seq.; proposes to drive them to his carriage, 139; number of in 1799, 148. Narragansetts, two bought by Washington, 132. Negroes, _see "Slaves."_ "Nelson," one of Washington's war horses, 132, 133. New England, Washington's observations of agriculture in, 115. Niemcewicz, Julian: describes condition of negroes at Mount Vernon, 197, 198; opinion of Nelly Custis, 227. "Old Chatham," a worn-out horse, 134. Overdursh,--, Dutch redemptioner bought with his family, 167. Oxen: used in farm work, 122; number of in 1785, 144; fattened and killed when eight years old, 145. Palatines: Washington considers importing, 24, 30; mentioned, 167. Palmer, Jonathan, overseer, contract of, 185. Parkinson, James: description of American live stock, 54-58; considers renting one of Washington's farms, 127; on Washington's tone toward his slaves, 202; his account of Mount Vernon and Washington's farming operations, 270-280. Patterson, John, paid for carpenter work, 153. Peaches, Washington raises, 149. Pearce, William: letters of Washington to, 86; describes poor condition of the sheep, 137; letter to about Bishop, 171; manages Mount Vernon, 181; overseers described to, 183; letter from about the dead miller's family, 187; direction to about Cyrus, 209. Perkins' Tavern, Washington stays over Sunday at, 116. Peters, Richard: quoted regarding wolves, 56; sends plan of drill to Washington, 107. Philadelphia Society for the Promotion of Agriculture, founded, 91. Phillipse, Mary, Washington's alleged infatuation with, 170. Piney Branch, turned into Dogue Run, 97. Pitt, William, a contributor to the _Annals of Agriculture, _74. Plow: Washington invents one, 94; buys a Rotheran, 99. Poelnitz, Baron, Washington inspects threshing machine belonging to, 126. Pohick Church, Washington a vestryman of, 100. Poland oats, sown in experimental plot, 112. Pond, Rev., "lame discourses" of, 116. Poole, William, letter of regarding want of water in mill stream, 97. Posey, Captain John: fox hunting with Washington, 256; Washington's relations with, 294; bankrupt and in jail, 295, 296. Posey, Milly: member of dancing class, 248; stays at Mount Vernon, 295. Posey, St. Lawrence, Washington helps to educate, 295. Posey plantation, bought by Washington, 17. Potatoes: method of growing under straw, 112; quantity raised in 1788, 113.