A large dry dock is being built at the Pacific end having the same usable dimensions as the canal locks, capable of accommodating any vessel that can pass through the canal. The principal machine shops will also be erected there, and a coaling plant of half the capacity of the one at the Atlantic end will be provided. A little to the east of the Pacific terminal works will be stationed the capital of the Canal Zone, where the administrative offices, the governor's residence, and two new towns will be built. The administration building, which is to be a three-story structure of concrete, hollow tile, and structural steel, is to occupy an eminence on the side of Ancon Hill, which will afford a splendid view of the Pacific fortifications, the entrance to the canal channel, a part of the port works, and of the canal itself from the great continental divide to the Pacific.

There one may sit and see ships coming into the canal, tying up at the docks, sailing up the big ditch, and passing through the locks at Miraflores and Pedro Miguel. Near by will be the permanent home of the marines who will be stationed on the Isthmus, their barracks and grounds occupying the broad plateau on the side of Ancon Hill made by taking out the millions of cubic yards of stone required for the concrete works on the Pacific side of the Isthmus. Two permanent towns will be built at Balboa, one for the Americans and the other for the common laborers. The American town will be built under the capitol hill on a broad plain that was made by pumping hydraulic material into a swamp and by dumping spoil from Culebra Cut.

When the terminal plant at Balboa is completed it will represent probably the most extensive and adequate port works in the New World. In addition to the main dry dock it will have a second one which will be smaller, but which will be large enough to accommodate a majority of the ships that will pass through the canal. The existing dry dock at the Atlantic end will be continued in service.

It is certain that none of these port works will ever fail by reason of insecure foundations. Wherever unusual loads were to be carried great piers of reinforced concrete were sent down to solid rock, often a distance of 60 feet below the surface. They consisted of a hollow shell of reinforced concrete which was allowed to sink to hardpan of its own accord or under heavy weight. These shells were built in sections 6 feet high. The bottom section was 10 feet in diameter, and the lower end was equipped with a sharp steel shoe. As the section cut down into the earth of its own weight and that above it, laborers on the inside removed the material under the shoe and as they did so it sank further down. The sections above were only 8 feet in diameter, and did not quite fill up the hole made by the bottom of the section, thus overcoming all skin friction, and permitting the full weight of the series of sections to fall on the lower one. A jet of water was forced around the sinking pier all the time it was going down, and this made its progress the more easy. At times the weight of the superimposed sections was sufficient to force the pier down through the soft mud, while at other times the material became so

heavy that even a 25-ton weight on top of the pier scarcely moved it. At one place a stratum of material was struck about 25 feet below the surface which yielded sulphuretted hydrogen gas. This affected the laborers' eyes, and some of them had to go to the hospital for treatment. The work of digging out the material was continued until the lower section reached bed rock, where it was anchored. The sections themselves were tied together with heavy iron rods. After they were firmly in place the interior was filled up with concrete, itself reinforced, so that the foundations became, in reality, a series of huge concrete piles, 8 feet in diameter, anchored to bed rock.

The coaling plants at the two terminals will be the crowning features of the terminal facilities. With an immense storage capacity, and with every possible facility for the rapid handling of coal, both in shipping and unshipping it, no other canal in the world will be so well equipped. The coal storage basin at the Atlantic end will hold nearly 300,000 tons. This basin will be built of reinforced concrete, and will permit the flooding of the coal pile so that one-half of it will be stored under water for war purposes. It is said that deterioration in coal is not as great in subaqueous storage, and at the same time the pile is less subject to fire. The plant will be able to discharge a thousand tons of coal an hour and to load 2,000 tons an hour. Ships will not go alongside the wharves to be coaled, but will lie out in the ship basin and be coaled from barges with reloader outfits. Special efforts have been made to provide for the quick loading of colliers in case of war. The coal

handling plant at the Pacific entrance will have a normal capacity of 135,000 tons and will be able to handle half as much coal in a given time as the one at the Atlantic end.

There will be big supply depots where ships can get any kind of stores they need from a few buckets of white lead to an anchor or a hawser; a laundry in which a ship's wash can be accepted at the hour it begins its transit of the canal, for delivery by railroad at the other end before it is ready to resume its ocean journey; an ice plant which will replenish the cold storage compartments of ships lacking such facilities. In short, it is proposed to attempt to do everything that may be done to make more attractive the bid of the canal for its share of business.

W

CHAPTER VIII

THE PANAMA RAILROAD

HEN the United States acquired the properties of the new French Canal Company

it found itself in the possession of a railroad for which it had allowed the canal company $7,000,000. This road, in the high tide of its history, had proved a bonanza for its stockholders, and during the 43 years between 1855 and 1898 it showed net profits five times as great as the original cost of its construction.

When the United States took over the road someone described it as being merely "two streaks of rust and a right of way.' While the Panama road as acquired by the United States in its purchase of the assets of the new French Canal Company might have been all that this phrase implies, it was none the less as great a bargain as was ever bought by any Government, and probably the greatest bargain ever sold in the shape of a railroad. It was not the rolling stock that was valuable, nor yet the road itself; the real value was to be found in the possibilities of the concession. Not only was this road destined to render to the United States a service in the building of the Panama Canal, worth to Uncle Sam a great many times more than its cost, but it was also destined to yield a net profit from its commercial