Lincoln (44), capital of Lincolnshire, on the Witham, 130 m. N. of London; is a very old and quaint city, with one of the finest cathedrals in England, and many historic buildings. Its annual spring horse-fair is among the largest in the world. It manufactures agricultural instruments, and trades in flour. Its stands on the Oolitic Ridge, and commands a wide view of the Trent Valley.