this point the ruins of a straight wall run across to Adham Khan's tomb. It has been contended, and it is probably the case, that these walls enclosed the citadel of Rai Pithora, or Prithwi Raja, the King of Delhi, who lost his life fighting against the Mahomedan invaders in 1192. We have reason to believe that the western wall was raised, and that outer defences were added to it, by the conquerors, who were determined that their foes should have greater difficulty in entering the city than they themselves had experienced. Ala-ud-din is known to have either strengthened the defences or to have built new walls about 13 10; perhaps to him we may ascribe the construction of a further length of citadel wall, which was made from the Sohan Gate, across the Kutb Road, as far as the road to Tughlukabad ; most of this section has now disappeared.
The outer wall of the city took off from the Fateh Burj of the citadel, and ran to a corner, afterwards joined to Siri by the wall of Jahanpanah ; thence the wall of Old Delhi ran east, crossed the road, and was continued to the corner, where the other wall of Jahanpanah afterwards joined it. In this wall, which thus divided the two cities, were three gates ; close to the junction was a postern leading to the Hauz Rani, now
