TABLE NO. 57.-Panama Canal-Detail of cost of production and distribution of electric current, Jan. 1, 1915, to June 30, 1915.

1 Indicates credit.

TABLE NO. 58.-Panama Canal-Cost of water per 1,000 gallons, April to June, 1915, Ancon-Balboa-Panama System.

[Quantities exclude water used in city of Panama and north of Pedro Miguel.]

TABLE NO. 59.-Panama Canal-Cost of water per 1,000 gallons, fiscal year 1915, Gatun

TABLE NO. 60.-Panama Canal-Cost of water per 1,000 gallons, fiscal year 1915, Colon

Cristobal system.

TABLE NO. 61.—Panama Canal-Cost of operating employees' quarters, March to June, 1915, inclusive.

Distribution.

TABLE NO. 62.-Statement of overhead expenses, fiscal year 1915-Continued.