The channel below the Nanking Pukow Narrow will follow the short passage alongside of the foot of the Mofushan to Wulungshan. The loop around the island north of Nanking will have to be blocked up in order to straighten the course of the river. The section of the river from Nanking to Wuhu is almost in a straight line with three dilatations along its course one just above Nanking the other two just above and below the East and West pillars. To regulate the first dilatation the channel above Me-tse-chow should be blocked up and the island outside of it should be partly cut to widen the proper channel. To regulate the other two dilatations the river should be made to curve toward Taiping Fu to follow the deep channel on the right bank. The left channel should be blocked up. The islands along this curve should be partly or wholly removed. To regulate the dilatation above the Pillars, the Friends Channel should be blocked up and Friends Island be partly cut away. And the left bank below Wuhu should also be cut to give the channel a uniform width. d. From Wuhu to Tungliu This part of the river is about 130 miles in length. Along its course there are six dilatations, the most prominent of which is the one that lies immediately below Tungling, which extends over ten miles from side to side. In each of these dilatations there are usually two or three channels with newly formed islands between them. The deep passage often changes from one side to the other, and it is not uncommon that all of the channels are filled up at the same time, thus stopping navigation altogether for a considerable period. See Map VIII.