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Of the hardening salts present in potable water, carbonate of lime is the one most generally met with, and to obtain a numerical expression for this quality of hardness a sample of water containing 1 lb. of carbonate of lime, or its equivalent of other hardening salts, in 100,000 lb. 10,000 gallons is said to have 1 deg. of hardness.

To the right and seaward, the eye travelled past yet another tier, where a stumpy Swedish tramp lay cheek-by-jowl with two stately Italian barques now Italian-owned, but originally built in Glasgow for traffic around the Horn and so followed the curve of the harbour out to the Channel, where sea and sky met in a yellow flood of potable gold.

Poetry's "secret alchemy turns to potable gold the poisonous waters which flow from death through life." It makes the familiar strange, and creates the universe anew.

Has not Italy the Po, which illustrious writers have named the king of rivers? Are not other regions watered by great rivers, such as the Don, the Ganges, the Danube, whose waters drive back those of the sea with such force that fresh, potable water is still found forty miles from their mouths?"

The nugatory art of dissolving it, so as to render it potable, and to prevent it from again being converted into metal, employed a multitude of busy idiots, not only in concealed corners, but in the splendid laboratories of the great.

The nearest spring of potable water available for our excavation camp at Sikyatki was Kanelba, or Sheep spring, one of the best sources of water supply in Tusayan. The word Kanelba, containing a Spanish element, must have replaced a Hopi name, for it is hardly to be supposed that this spring was not known before sheep were brought into the country.

There is no potable water on it, save a kind of dew produced by one sole tree standing upon the most lofty point of the whole island; and from which it falls drop by drop into an artificial trough. From this island, Columbus put to sea the third day of the ides of October. We have learned this news a few days after his departure. You shall hear the rest later. Fare you well.

Considering the fact that it furnished potable liquid for ourselves and horses, and that the line of trees which skirted the bluff was available for firewood, our camp compared well with many which we subsequently made in our summer's explorations. SEVENTEENTH ANNUAL REPORT PL. XCI^b

THE RIVERS joined together to complain to the Sea, saying, "Why is it that when we flow into your tides so potable and sweet, you work in us such a change, and make us salty and unfit to drink?" The Sea, perceiving that they intended to throw the blame on him, said, "Pray cease to flow into me, and then you will not be made briny." The Playful Ass

Some have pretended to make gold potable among other frauds practised upon credulity."