To regulate this part of the river a few wide spaces have to be reclaimed to give a uniform channel, and the side channels at three or four places closed up. Then we can make a channel with a uniform depth of from six to eight fathoms at all seasons. At Collison Island section of the river the Ayres Channel has to be closed up, leaving the winter channel alone so as to give a gentle curve above and below this island. At Willes Island and Gravenor Island point the Round Channel and the channel between these two islands must be blocked up. The river must be made to cut through Willes Island to make a shorter curve. At Bouncer Island the South channel must be blocked up and above this the Low Point turn must be cut away to form a gentler curve. From this point to Hankow the river should be made narrower first by reclaiming the right side as far as the meeting of the southwest curve with the right bank then the reclamation should start at the opposite side of the left bank and right up along the front of Hankow Settlement until the Han River Mouth is reached. Thus a depth of six to eight fathoms can be secured right up to the Bund of Hankow. To sum up, the whole length of the regulating course of the river from the deep sea to Hankow is about 630 miles. The embankments will be twice this length; that is, 1,260 miles. I have estimated that the sea wall at the mouth of the river could be built at $200,000 a mile, thus for both sides $400,000 a mile will be sufficient for the 140 miles from the deep sea to Kiangyin. For, in this part we have only the two embankments to deal with, which merely requires the tumbling of stones into the water until the pile is strong enough to hold the current to a directed course. As soon as these stone ridges on both sides of the river are formed, nature will do the rest to make the channel deep. The work for this part, therefore, is simple. [Illustration: MAP IX]