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Updated: May 29, 2025
In part it is derived from old residual clays, which in the making had been leached of the lime and other soluble ingredients of the rock from which they weathered. In part it consists of sound rock ground fine; a drop of acid on fresh, clayey till often proves by brisk effervescence that the till contains much undecayed limestone flour.
He turned half-about as the pistol slid from his fingers. He gave no cry; only there leached us a loose, throttling sound such as a steam whistle makes before fetching its note. It came to us in the lull between two waves that broke and raised up the sands to ripple round his feet. "Both hands up, Mr. Glass!" Dr. Beauregard advanced a step.
How much of the lime of which these rocks were built was leached out of the land-areas, and how much was held in solution by the original sea-water, is of course a question. But all the carbon they hold came out of the air.
The old house stood upon about as perverse a little patch of the planet as ever harbored a half-starved earth-worm. It was as sandy as Sahara and as thirsty as Tantalus. The rustic aid-de-camps of the household used to aver that all fertilizing matters "leached" through it.
These animals were generally called after beautiful women celebrities. Mine was called "Lillie Langtry." When we got clear, 40 steamers were blocked. Our ship led the procession through the Canal. There was only just room for us to pass where the accident had happened, and when we leached Suez 200 ships, including several men-of-war, were awaiting our arrival to pass south.
The tailings are placed in vats, and subjected to the action of solutions of cyanide of potassium of varying strengths down to 0.2 per cent. These dissolve the gold, which is leached from the tailings, passed through boxes in which it is precipitated either by means of zinc shavings, electricity, or to the precipitant.
There would be trouble finding salt on this planet. The water that should be in the seas was frozen in the glaciers. Salt would not have been leached out of the soil and gathered in the seas. It would be a serious problem. But Cochrane was very tired indeed. "I'll take the first two hours," said Babs briskly. "Then I'll wake you." He showed her how to use the weapon.
The salt-water and the salt-soaked earth from the bottom of the lagoon are put into vats and leached, and the resulting saline is boiled in ovens, each of which contains an olla. The industry is conducted by ladinos, as well as indians, but the salt is poor. It was 8:45 when we started, and almost immediately we began a hard climb over limestone, giving a severe test to our poor animals.
At the suggestion of neighbors he drove rusty nails into the trunks, and buried bags of pear seeds at the foot of them, and he fertilized the inclosure richly. But all to no purpose. Finally grandmother advised the old Squire to spread the leached ashes from her leach tub after she had made soap and hulled corn in the spring on the ground inside the pen.
Compounds of iron have been taken into solution by ground water from soil and rocks, and are now changed to the insoluble oxide on exposure to the oxygen of the air. In wet ground iron compounds leached by ground water from the soil often collect in reddish deposits a few feet below the surface, where their downward progress is arrested by some impervious clay.
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