Science: Water-Harvest Notes

> Though they spend their lives on the bottom of the sea, well protected from rain, oysters grow plump in rainy seasons, lean in droughts. So claimed the New Jersey Agricultural Experiment Station last week. Reason: rain washes minerals from the soil into sounds and ocean bays, where they fertilize the microscopic plants which oysters eat.

> Worked-out cotton fields, turned to pasture, will yield 149 Ib. of beef per acre. But if nearby streams are dammed with earth and the fields shallowly flooded, they will yield as much as 600 Ib. of...

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