Maritime county in the E. of England, between the Humber and the Wash, next to Yorkshire in size, consists of upland country in the W., chalk downs in the E., and fens in the S., but these well reclaimed and cultivated. It is watered by the Trent, Witham, and Welland, and crossed by numerous canals. Iron abounds in the W.; sheep, cattle, and horses are raised. Grimsby is a shipping and fishing centre. Sir Isaac Newton and Lord Tennyson were born in the county, which has many historic associations.