THE PANAMA ROUTE FOR A SHIP CANAL. 



305 



named, so that those waters would not find their way into the canal. 

 There are a few other small works of similar character in different por- 

 tions of the line, all of which were recognized and provided for by the 

 commission. 



The principal items of the total amount of work to be performed in 

 completing the Panama canal, under the plan of the commission, can 

 be classified as shown in the following table : 



Dredging 27,659,540 cu. yds. 



Dry earth 14,386,954 cu. yds. 



Soft rock 39,893,235 cu. yds. 



Hard rock 8,806,340 cu. yds. 



Rock under water 4,891,667 cu. yds. 



Embankment and back filling 1,802,753 cu. yds. 



Total 97,440,489 cu. yds. 



Concrete 3,762,175 cu. yds. 



Granite 13,820 cu. yds. 



Iron and steel 65,248,900 lbs. 



Excavation in coffer dam ■ 7,260 cu. yds. 



Pneumatic work 108,410 cu. yds. 



The lengths of the various sections of this route and the costs of 

 completing the work upon them are fully set forth in the following 

 table, taken from the commission's report, as were the two preceding: 



Total Estimated Cost. 



Colon entrance and harbor 



Harbor to Bohio locks, including levees 



Bohio locks, including excavation 



Lake Bohio 



Obispo gates 



Culebra section 



Pedro Miguel locks, including excavation and dam . . 



Pedro Miguel level 



Miraflores locks, including excavation and spillway. 



Pacific level 



Bohio dam 



Gigante spillway 



Pena Blanca outlet 



Chagres diversion 



Gatun diversion 



Panama Railroad diversion 



Total . 



Engineering, police, sanitation and general con- 

 tingencies, 20 per cent 



Aggregate . 



VOL. LXI. — 20. 



