Lahore (177), an ancient walled city on the Ravi, a tributary of the Indus, 1000 m. NW. of Calcutta, is the capital of the Punjab, and an important railway centre; it has many fine buildings, both English and native, including a university and a medical school, but the situation is unhealthy; half the population are Mussulmans; the trade is inconsiderable; the district of Lahore (1,075) one of the most important in the province, is well irrigated by the Bári Doab Canal, and produces fine crops of cereals, pulse, and cotton.