…at an initial plant cost of 5 pounds per linear yard by way of the Dargle, Rathdown, Glen of the Downs and Callowhill to the 26 acre reservoir at Stillorgan, a distance of 22 statute miles, and thence, through a system of relieving tanks, by a gradient of 250 feet to the city boundary at Eustace bridge, upper Leeson street, though from prolonged summer drouth and daily supply of 12 1/2 million gallons the water had fallen below the sill of the overflow weir for which reason the borough…
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That section of the road has a five-degree gradient.
...a "social gradient of health" exists even among the rich: the outlandishly wealthy live healthier and longer than the rich, who live better than the merely comfortable.
Laura Blue -- Time, "Narrowing World Health Disparities", 8/28/08