In August, 1853, the Rajah went to Bruni, where he found that his power and his popularity had not waned, though discarded by the British Government, and discredited by his own countrymen, and though he arrived in a small merchant ship instead of in one of her Majesty's men-of-war. He stayed some time in Bruni, and was warmly received by the new Sultan, Abdul Mumin, for Omar Ali had departed to answer for his sins, "and was fully and firmly reinstated as their friend and adviser." Those districts outside Sarawak, namely the Sadong, Batang Lupar, Saribas, and Kalaka rivers and their tributaries, with a coast-line of some seventy-five miles, in area about three times the size of the raj, were now incorporated with it by a cession granted by the Sultan, the Rajah agreeing to pay the Sultan half of any surplus revenues that might accrue. We may note here for convenience that this was altered afterwards in 1861, when the territories as far as Kedurong point were ceded, thereby giving the State a further coast-line of 180 miles, and the rivers Rejang, Oya, Muka, Tatau, and Bintulu. For this additional cession and that of 1853 a fixed yearly sum was to be paid to the Sultan as compensation for loss of revenue; and these cessions, having been made subsequent to the treaty of 1847, contain a clause to the effect that none of the districts ceded by them may be transferred by the Rajah or his successors to any other government, company or persons without the sanction of the British Government, but the Sultan's sanction is not required. In the event of the cession money not being paid for three consecutive years, the districts ceded would revert to the Sultan; otherwise the sovereign and territorial rights over these districts are absolutely invested in the Rajahs of Sarawak, the Sultan having reserved no rights or power whatever over them. The cessions subsequently obtained by the present Rajah, which will be noted in their proper places, were granted on the same terms. In December, the Rajah arrived at Lingga on his way to Sekrang and farther up the river, with the object of opening up communication with the turbulent members of the Dayak tribes in the interior, under Rentap and Bulan. These chiefs were men of very different character, and headed native bodies of like diversity. Rentap was an active, crafty, and determined man, rootedly opposed to the interference of Europeans and the putting down of piracy and head-hunting. On the other hand, Bulan was the figure-head of a party that hesitated, uncertain which direction affairs would take, and watching to see which way the cat jumped. Bulan and his faction would not engage in active hostility against the Rajah's government, unless they saw that the tide of affairs was setting strong against it. But also they would not profess friendship, or lend help against the turbulent party.