San Francisco water . Tarragona (above), with a history going back to Julius Caesar and beyond, has an aqueduct dating from imperial times. The length is twenty-two miles, part underground. It was restored to use between 1780 and 1800. Merida (below) dates back to 23 B. C. and was once known as the Spanish Rome. Its ruined aqueduct shows three tiers in brick and granite. January, 1927 SAN FRANCISCO WATER

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectwatersupply, bookyear