United States or Morocco ? Vote for the TOP Country of the Week !
What it loses by evaporation, it regains from the little neighboring streamlets and the heavy rains. "Lake Kirdall covers about seventy-five square miles, and its level is but slightly below that of the heights which surround it. Shut in among the mountains, it can be reached only by narrow and rocky gorges. Several villages, however, have sprung up upon its banks.
The Kohala hills, picturesque, wooded, and abrupt, bound Waimea on the north, with their exquisite grassy slopes, and bring down an abundance of water to the plain, but owing to the lightness of the soil and the evaporation produced by the tremendous winds, the moisture disappears within two miles of the hills, and an area of rich soil, ten miles by twelve, which, if irrigated, would be invaluable, is nothing but a worthless dusty desert, perpetually encroaching on the grass.
Formerly this evaporation was performed under the atmospheric pressure, and a heat of 218° or 220° was required to make the syrup boil; by which degree of heat, however, a portion of the sugar was discoloured and spoiled, and the whole produce was deteriorated. The valuable thought occurred to Mr.
Putting the cerate on before retiring answers very well. This quantity costs about twenty-five cents, and will last three winters. The vessel it is kept in should be covered, to prevent evaporation. "The way to wealth," says Doctor Franklin, "is as plain as the way to market." Many men, however, either miss the way, or stumble and fall on the road.
Here the water was observed to be much saltier to the taste than that of the open sea, a fact easily accounted for, as it is subject to the fierce tropical sun, and the consequent rapid evaporation leaves the saline property in aggregated proportions at the surface.
The greatest care must be taken to prevent loss of solutions during processes of evaporation, either from too violent ebullition, from evaporation to dryness and spattering, or from the evolution of gas during the heating. In general, evaporation upon the steam bath is to be preferred to other methods on account of the impossibility of loss by spattering.
Sometimes in hot weather it is kept going day and night, indeed without it at times we should scarcely have been able to bear the heat, or go to sleep at night. The tatties are mats made of a sweet-smelling grass, which are hung up on the side from which the hot wind comes, and being kept constantly wet by the chesties, the air passing through them is cooled by the evaporation which takes place."
The following table gives the vapor pressure at Buffalo, N. Y., for twenty consecutive days in April: Supposing a hatch to be started at the beginning of the above period, by the end of the first week, with the excessive evaporation, due to a low vapor pressure, the eggs would all be several per cent. below the normal water content; the fact that the next week was warm and rainy, and the vapor pressure rose until the loss was entirely counterbalanced, would not repair the injury, even though the eggs showed at the end of incubation exactly the correct amount of shrinkage.
As for the second half of the bolete, the half which I did not colonize with vermin, it remains compact, the same as it was at the start, except that its appearance is a little withered by evaporation. The fluidity, therefore, is really and truly the work of the grubs and of them alone. Does this liquefaction imply an easy change?
At the dried-up bed of the swamp itself he did not care to look a second time; its once reedy margin was now a sight of horror, for many hundreds of cattle had been bogged there long months before, as they had striven to get further out to the centre where there was yet left a little water, saved from evaporation by the broad leaves of the blue water-lilies.
Word Of The Day