storage pile, and will support the old Pacific division berm cranes which will be reerected to rehandle the coal. The material was mixed

yard mixer and placed by a locomotive crane. At the case of the fiscal year all but three of the piers over the deep coal pockets were up to the construction joint, where the girders which arry the rail are to be set. The retaining wall between the high and storage pockets was up to elevation 12 for three-fourths of its length. The rubble retaining wall on the south side of the low arage area was completed, as well as a part of the small rubble retaining wall at the east end of the high area. There were placed during the year 1,330 cubic yards of concrete and 808 cubic yards of rabble masonry at an average division cost of $7.4811 per cubic yard. There were also placed in the foundations for the berm cranes 2,620 abic yards of concrete at a division cost, exclusive of reinforcements, $7.4464 per cubic yard.

The total amount of excavation accomplished, including the work for dry docks, entrance basin, coaling plant, shops, quay walls, and pers aggregated 1,513,048 cubic yards, of which 1,477,843 cubic yards vere placed in fills and embankments, the remainder being hand evation wasted in the excavation of foundations for shops, and ange-peel excavation thrown to one side during the excavation for foundations for wharves and piers. The excavated material was ed to bring the shops' yard up to elevation 18 to make the fill beind the quay wall, piers, and the area to be occupied by the Panama Railroad yards, which lie east of the head wall of the permanent ers, for the Naos Island Breakwater, and part was wasted on the Balboa dumps.

Shcps.-Lieut. Col. T. C. Dickson, United States Army, inspector fshops, was in immediate charge of the design and installation of be machinery of the new Balboa shops until March 6, 1914, when was relieved from duty with the canal. The steelwork was carred on by contract and completed during the year. The total amount material delivered was 11,657,429 pounds, and the cost of the material and erection in place under contract was $427,203. The k was completed. The buildings have cement tile roofing, the es being manufactured on the Isthmus and erected in place under tract; the total amount of standard red tile squares put on was 41.18; gutter-tile squares, 201.15; ridge roll, 7,351 linear feet; bed glass pieces, 11,188; and the total cost was $102,659.98. The aining work on the foundations was pushed so as to be prepared the contractor for the steelwork, and 3,221 cubic yards of conTe were placed during the year. All the shop area had been bcght up to grade and surfaced with crushed stone, excepting the pace occupied by the incline from the dry-dock excavation and a all area between the roundhouse yard and the foundry. The

foundations of two of the buildings were interfered with by the sand dock and considerable trouble was experienced in placing foundations, due to obstructions in the mud below low tide, consisting of old barges and other French equipment and old metal which had been dumped into the area and subsequently covered up.

The installation of machine foundations in the various buildings progressed rapidly as soon as it was possible to start work inside the buildings. In this connection 4,944 cubic yards of concrete were used. The shops' tunnel, which runs through the building and yard parallel to the axis of the dry dock, was completed. A proper drainage system was provided over the entire area.

The mechanical division abandoned Gorgona in August, 1913, and, together with the foundry and planing mill, moved direct to Balboa. The other shops were transferred temporarily to Empire, and, commencing March 1, 1914, were gradually moved to Balboa. At the close of the year practically all of the machines were erected in the permanent locations and in operation. The total amount expended on the shops, including the cost of moving and installing the machies, was $2,384,967.33. The shops office building is the last one under construction. At the close of the year the steel framework and cement tile roofing were completed and the construction division of the supply department was putting in the walls and floors, and engaged in the completion of the building. The total amount expended on the office building was $59,494.90.

Breakwaters. As stated in the last annual report, it was decided to construct a detached breakwater on the east side of Colon Harbor to protect the interior harbor against the waves caused by the trade. winds, its general direction extending out from Coco Solo to a point 2,000 feet east of the outer extremity of the west breakwater. The breakwater, as originally approved, was to be 7,200 feet long, its inner end being 3,893 feet from the end of the shore fill. Investigations were made in various localities for the purpose of securing suitable core and armor rock for use in its construction, with a view to doing away with the necessity of the further use of Porto Bello. Upon the examination of comparative estimates of costs bearing on different sources of supply of rock to be used, it was decided to obtain the rock from the Sosa Hill quarry and transport it across the Isthmus. A double-track trestle was extended out from Coco Solo and about 11,093 linear feet were completed at the close of the year. A railroad connection was completed between the root of the breakwater and the railroad extending from Mount Hope to Margarita Point. Auxiliary lines and sidings were built in the vicinity of Coco Solo Point and along the Margarita Point railroad. In all 5.2 miles of new track were laid. A dock 16 by 100 feet, with trestle and track connections, was built for the unloading of materials, and a small

harbor for the landing of launches and tugs towing piles was excavated by the dredge Sandpiper, necessitating the removal of 58,650 cubic yards of sand. A 6-inch water main was laid from the Margarita Point main at the Coco Solo turnout, and a 50,000-gallon storage tank was erected for watering locomotives and for additional fire protection. The Coco Solo yard was filled in to elevation plus 3.3, and the approach tracks for the trestle were raised to elevation plus 14.5. Practically all of the tracks have been ballasted to the main line of the Panama Railroad, for which 64,506 cubic yards of fill were used in addition to 11,512 cubic yards of gravel ballast and 522 cubic yards of crushed-rock ballast.

With the abolition of the Atlantic division on February 1, the west breakwater work in Colon Harbor and the operation of Porto Bello quarry were transferred to the division of terminal construction. Armor rock was procured from Porto Bello on the old crushed-rock quarry level above the two lower levels referred to in the last annual report. On December 1, 1913, the working hours in the quarry were reduced from 12 hours to 8 hours a day, and on April 30 the operation of the quarry ceased. During the year 207,654 cubic yards of armor rock were produced and shipped at a division cost of $4.0182 per cubic yard. Auxiliary excavation by steam shovels amounted to 302,893 cubic yards, which were wasted on the shore dump. In May, 1914, the quarry was closed down in such a manner that it can be reopened if found necessary later in connection with the east breakwater. Of the 207,654 cubic yards of rock shipped from Porto Bello, 162,951 cubic yards were placed by three derrick barges and 44,703 cubic yards were placed by three cranes at a division cost of $0.9673 per cubic yard. Rock removed by dredges to the extent of 18,254 cubic yards was placed in the breakwater. The work was completed in May, 1914, at a division cost of $3,492,781.27. It contains 1,945,733 cubic yards of material, consisting of 669,254 cubic yards of dredged rock, 819,930 cubic yards of Toro Point rock, and 456,549 cubic yards of Porto Bello rock.

Work on the Naos Island Breakwater was continued throughout the year. With the closing down of dry excavation in Culebra Cut on October 10, a borrow pit was opened in the side of Sosa Hill, as from the action of the breakwater it had been concluded that too much soft material had been used in its construction and that nothing but rock should be put in to secure its completion. The work at Sosa Hill continued from October 10, 1913, until March, 1914, when the output from the dry dock, together with the character of the material warranted the use of the spoil from this locality for breakwater purposes. At the beginning of the year all the trestle had been completed to elevation plus 14 and had been filled in with the exception of 600 feet. At the close of the year the average elevation of the

breakwater was plus 18.5 and it was finished to its full width. average settlement during the last two weeks of the year was foot with the exception of one stretch about 600 feet in length settled at the rate of about one-half an inch per day. During a tion of the last three months of the year there was a settleme about 2 feet a day at the south end of the breakwater immed north of Naos Island, whereas the settlement at the end of the at this point amounted to only 3 inches per day. During the year 652,587 cubic yards were placed at an average division co $0.6088 per cubic yard.

B

Cristobal coaling plant.-Drilling and blasting channel ma in the vicinity of the Cristobal coaling plant was started by dredging division in July, 1913, and the removal of the materi: a pipe-line suction dredge was continued through the year. dredged material was pumped ashore where most needed. largely clean coral rock and sand, it has been used to bring the in which coal will be stored in the dry, measuring about 300 by 1,200 feet, up to elevation plus 2. Work was pushed on the struction of trestles for use in setting the 6-foot caissons, and the construction of the two concrete walls supported on piles, al 700 feet in length, that carry the tracks for the stocking and recla ing bridges. At the end of the year the trestle construction about 25 per cent completed. The caissons are of steel, 6 feet diameter, and by the end of the year 78 of the cylinders had b set, and 6 of these were driven to rock with a steam hammer advance of any excavation. The total amount of concrete pla was 3,123 cubic yards, at an average division cost of $5.4986 per cu yard.

A contract was entered into for furnishing the materials, necessa machinery, and the erection in place of the coal-handling pla The coal-handling plants are designed for the storage of 485,000 to at Cristobal and 215,000 tons at Balboa. Of the former, 100,000 to are to be wet storage, and in the latter case 50,000 tons.

Fuel-oil plant.-A contract was entered into on October 1, 19 for four fuel-oil storage tanks 93 feet in diameter and 35 feet height, each having a capacity of 40,000 barrels, to be completed at cost of $62,800. Two of them are located at Mount Hope and two the Balbon dump southeast of Sosa Hill. Plans have been prepare and advertisements issued for the necessary pumping plants in co nection with these tanks, one to be located at Balboa and one a Mount Hope. Provision is made for the installation of three pump in each plant, two of which will be purchased at the present tim They will be able to handle oil from Balboa to Miraflores tank, an from Mount Hope to Gatun tank, at the rate of about 400 barrel an hour. On the Atlantic side as much of Docks 13 and 14 as i

ecessary will be used as oil docks, and the tank field will be located between the east diversion and the Mount Hope Road, where there se suitable locations for 40 or 50 tanks. The pumping plant will located immediately east of the Mount Hope filtration plant. At the Pacific terminal there will be a berth for oil vessels 75 feet wide by about 2,000 feet long immediately adjoining the canal channel and south of the old French pier. There will be three oil cribs, two of which will be constructed at once, consisting of steel and concrete

supported by 6-foot concrete cylinders. The pumping plant ill be located on the lower level of Balboa dump, opposite the oil ribs. The tank field has been laid out on the higher level of Balboa p. An area has been reserved for the accommodation of 33 lots ch 200 feet square. To the end of the fiscal year there has been apended on the fuel-oil plant at the Pacific terminal $50,289.33, including the cost of dredging berth for ships, for which there were moved 60,776 cubic yards, at a division cost of $0.0983 per cubic ard, and on that at the Atlantic terminal $49,694.15.

Quay walls and pier.-Work was continued on the quay walls and pier at the Pacific end of the canal during the year. These nsist of reinforced-concrete deck supported by cylinders sunk to mck. When completed the total length of the quay wall or wharf ill be 2,662.65 feet, averaging 60 feet wide. Of this amount 648.78

were built for the Panama Railroad as a lumber dock, as reported in the previous annual report. The remaining portions of the wharf extend to the north and south of this lumber dock. The rth portion is supported upon cylindrical concrete caissons sunk rock and filled with concrete, reinforced with steel rails. The linders themselves are reinforced concrete 7 feet 6 inches in diamter, with 8-foot bottom section 5 feet in length. Of the section north the lumber dock, 1,238.42 feet, 16 caissons remained to be sunk saring the year, most of the substructure having been completed durthe previous year. There are 136 caissons in this dock. The sperstructure consists of reinforced girders, beams, and floor slab, th vitrified-brick surface. The work was begun in July, 1913, and was completed on February 1, 1914. The paving brick were laid 1 sand cushion. There were 75,683 square feet of brick laid on the nor of this dock, and it was completed on April 1, 1914.

To counteract any outward pressure against the cylinders "dead en were placed in the ground about 85 feet behind the rear edge of the wharf and opposite each transverse girder, each with an efSective bearing area of 48 square feet, constructed of reinforced con

te. They were connected to the dock by steel rods 24 inches in diameter, drawn tight by means of turnbuckles, and encased in

oncrete.