The united river ran north, disappeared underground in the Sahara and reached the Mediterranean at "the quicksands of the gulph of Sidra."
Poetsch in 1883, and originally applied to shafts passing through quicksands above brown coal seams, has been applied with advantage in opening new pits through the secondary and tertiary strata above the coal measures in the north of France and Belgium, some of the most successful examples being those at Lens, Anzin and Vicq, in the north of France basin.
So it is with the bogs and quicksands of society; but he is an old boy that knows it.
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