| 5,596 +--------+-------------+--------+------------ | | Pounds. | | Pounds. Reinforcing steel bars | ... | 387,000 | ... | 380,000 | | | | | | Square | | Square | | meters. | | meters. Expanded metal in roofs, | | | | slabs, etc. | ... | 5,691 | ... | 10,490 ==========================+========+=============+========+============ The total cost of these reservoirs, including valve-houses, by-passes, and the length of supply pipe where the by-pass joins, and including all engineering expenses, etc., but exclusive of the cost of lands, planting, fencing, and special work in connection with the formation of parks, was as follows: South Reservoir: 394,000 pesos, or 10,368 pesos per million liters. Obispado Reservoir: 375,000 pesos, or 9,375 pesos[7] per million liters. [7] Mexican currency. These rates may be regarded as reasonable when taking into consideration the special difficulties of construction in Mexico, and the high cost of all imported material, on which heavy duties are levied. The value of the materials alone in these reservoirs amounted to more than 70% of their total cost. ANALYSES OF ESTANZUELA AND SAN GERONIMO WATERS. Table 8 shows analyses of the Estanzuela and San Geronimo waters, made in February, 1910, by Messrs. Ledoux, of New York City. The Estanzuela sample was taken at the valve-house of the South Reservoir, while that of San Geronimo was taken in Shaft No. 1 of the infiltration gallery when flowing at the rate of about 450 liters per sec. Both waters are absolutely free from turbidity. TABLE 8.--ANALYSES OF ESTANZUELA AND SAN GERONIMO WATERS. In Parts per Million.