length of 1,000 feet, but with intermediate gates to conserve time and water. The committee called attention to the increasing difficulties of constructing a dam at or near Bohio, disclosed by additional borings, and condemned as impracticable a dam at Gatun where borings to 172 and to 139 feet below sea-level did not reach bed-rock.
The data, which the commission had instructed the committee to bring to Washington, were not submitted with the report, neither did such data accompany a progress report of the chief engineer, Mr. John F. Wallace, which was received a few weeks later. The type of canal was, however, quite fully discussed by Mr. Wallace, and his report contained the recommendation
The committee report, however, brought before the commission a definite recommendation, relating to the type of the canal. In the
|Fig. 1. Progress of Excavation on the Panama Canal under the United States, as Compared with Total Excavation Required.||Fig. 2. Diagram showing Relation of French and American Excavation on Panama Canal to Total Estimated Amount.|