The city of Buenos Ayres, S. A., has received a singular proposition from two German mechanical engineers. They offer to cover the city with a huge umbrella, the base of which is to be 670 feet in diameter, the height 1500 feet, ribs of cast-iron 31 inches in circumference and 8 feet apart, and lining of wrought-iron one and a half inches thick. The great thing when raised will be one mile and a half wide. Around it will be a canal communicating with the Plate River, to carry away the water that might overflow the city. The work is estimated at the modest sum of $5,750,000.
— Albert Plympton Southwick, Handy Helps, No. 1, 1886