Word: topsoil
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...topsoil in Deaf Smith is dark, sandy loam; underneath is a bed of caliche, which is rich in calcium carbonate. Locally grown wheat has an unusually high protein content, and six times more phosphorus than standard flour. Deaf Smith milk has 30% more phosphorus than the accepted standards for milk; carrots, turnip greens, beans, lettuce and cabbage are also rich in the mineral. All these elements are essential for building bone and muscle...
...walnut cleaned of its meat, it lies there a shell-no timber, no coal, no petroleum, no farm land really farmable." Twenty-five years ago, people first moved in numbers to Breathitt, to cut trees for railroad ties. The hills were stripped, the timber business expired, floods washed the topsoil off the farms."Now one farmer after another has given it- up as a bad job, has even deserted land he owns...
...dried-up northern ranges to graze on land that had been sacred to cattle. Cattle, said the cowboys, spread out in family groups to graze. Sheep followed each other, were bunched by the herder, tramped the range into dust, with the result that the next rain washed off the topsoil instead of bringing up fresh grass. Cattlemen had tried violence, but after a rancher in the Tonto Basin was hanged for killing two sheepherders, they gave it up. They tried cunning, stampeded wild horses into herds of sheep to discourage sheep-grazing on that part of the range...
...towns but at what a cost." The forests of Wisconsin and Minnesota slip down sluices to the tune of "A Hot Time in the Old Town Tonight." The Alleghenies are laid open in the quest for coal and ore. And the uncontrolled Mississippi floods to the delta, carrying the topsoil of the valley with it, leaving gullied hills, scalped plains. As an indication of how the great system can be saved from self destruction, an epilogue shows a glimpse of the flood control and reclamation work of the Tennessee Valley Authority...
...lies the crucial fact that the young men of the Department must drive themselves unceasingly toward goals in research if they wish to be reappointed. The type of student attracted to Physics, even more than the general run, is seriously intent upon doing more than merely scratching the intellectual topsoil of his subject. It is equally obvious that the possibility of thorough cultivation fades away if the tutors' and instructors' energy is devoted almost exclusively to research...