In 1798 Lord Wellesley arrived in India inspired by Imperial projects which were destined to change the map of the country. In 1799 Tippoo, Sultan of Mysore, was defeated and slain at Seringapatam, and the Carnatic or south-eastern portion of India ruled by the Nawab of Arcot, as well as the principality of Tanjore, were placed under British rule. These territories constitute the greater part of the present Madras Presidency. In 1801 the whole of the tract between the Ganges and Jumna, known as the Doab, with Rohilkhand, were obtained by purchase from the Nawab Vizir of Oudh. In 1803, after the second Mahratta War, Orissa was forfeited to the British and Berar to the Nizam of Hyderabad. In 1815 the Himalayan States were taken from the Nepalese, in 1817 the Pindaris were crushed in Central India and in 1818, after the third Mahratta War, the Bombay Presidency was formed. Assam was annexed in 1826, and Bharatpur taken in 1827. The extension of postal services over this vast increase of territory can be traced only by scattered references in official documents. There was no general postal system in the country prior to 1837. A few main lines of couriers connecting the principal towns in the various provinces with the seat of Government had been established for the conveyance of Government letters and parcels, but the use of these mail services by private persons was conceded only as a privilege. The local posts in districts between police stations and head-quarters were maintained by the zemindars or landholders of each district, and their duties in this respect are laid down in Bengal Regulation XX of 1817. The postmasters of Presidency towns exercised the functions of a Postmaster-General in their own provinces up to 1785, and the Collectors or district officers were responsible for post office and mail lines within the limits of their own jurisdictions. There was no central authority to secure the co-operation of postal officials in different provinces or to maintain uniformity of procedure, and the charges for the conveyance of letters, which, in the absence of postage stamps, were levied in cash, varied according to weight and distance. Thus the cost of conveyance of a letter from Calcutta to Bombay was one rupee a tola (2/5 oz. approximately), and from Calcutta to Agra twelve annas a tola. As postal officials were inclined to get as much as possible out of the public, private posts existed everywhere and were able to compete successfully with the Government services.