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 or 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.
But the work for certain sections of the upper part of the river is more complicated as about fifty or sixty miles of solid land of from ten to twenty feet above water level and thirty to forty feet below have to be cut in order to straighten the river's course. Of this cutting and removing work, how much will have to be done artificially and how much can be done by nature, I leave to the experts to estimate. Excepting this, the other parts of this work, I think, cannot cost much more than $400,000 a mile. So that the whole work from the sea to Hankow, a distance of 630 miles will cost about $252,000,000, or let us say, including the unknown part, $300,000,000 for the completion of the entire project for the regulating of the Yangtze River. By this regulating of the Yangtze River, we secure an approach of 600 miles inland for
