After rains water accumulates in the hollows of small closed valleys, and, evaporating, leaves hard dry levels of pure desertness that get the local name of dry lakes.

It is to be effected either by means of cloths kept constantly wet with cold water, or evaporating lotions; or by means of a bladder containing pounded ice mixed with water.

Salt is obtained by evaporating the seawater in small iron hand-pans (carahais), without previous evaporation in the sun.

" Gregory, convinced that no useful results could arise from any attempt to penetrate the inhospitable region to the south, determined to return before the rapidly-evaporating water on which they were dependent should vanish and cut off all retreat.

Nature is the husbandman who keeps this garden of the world in order, and the means and machinery by which she operates are the grand evaporating surfaces of the seas, the beams of the tropical sun, the lofty summits of the Abyssinian Mountains, and, as the product and result of all this instrumentality, great periodical inundations of summer rain.

Mr. Watt reckoned his boilers as capable of evaporating 10.08 cubic feet of water with a bushel or 84 lbs. of Newcastle coal, which is equivalent to 7 1/2 lbs.

of coke in evaporating a cubic foot of water, and the evaporation of a cubic foot of water per hour may be set down as representing an actual horse power in locomotives as well as in condensing engines, if expansion be not employed.

Q.Then the evaporating power of the boiler varies as the sectional area of the flue?

A.The evaporating power varies as the square root of the area of the flue, if the length of the flue remain the same; but it varies as the area simply, if the length of the flue be increased in the same proportion as its other dimensions.

The evaporating power of a boiler is referable to the amount of its heating surface, and the amount of heating surface in any flue or tube is proportional to the product of the length of the tube and the square root of its sectional area, multiplied by a certain quantity that is constant for each particular form.

Q.In other words you would recommend the inquiry to be restricted to the mode of evaporating a given number of cubic feet of water in the hour, instead of embracing the problem how an engine of a given nominal power was to be supplied with steam? A.I would first, as I have already stated, consider the actual power required to be produced, and then fix the amount of expansion to be adopted.

If the engine had to work up to three times its nominal power, as is now common in marine engines, I should either increase correspondingly the quantity of evaporating surface in the boiler, or adopt such an amount of expansion as would increase threefold the efficacy of the steam, or combine in a modified manner both of these arrangements.

Q.Having now stated the proportions proper to be adopted for evaporating any given quantity of water in steam boilers, will you proceed to show how you would proportion a boiler to do a given amount of work?

This rule of course supposes that the evaporating surface has been properly proportioned to the engine power. 313.

Beyond the garden she saw, bathed in the sunlight, a field of corn, just in the ear, stretching for half a mile, its yellow, pollen-laden tassels overtopping the dark green mass of broad glistening blades; and in the distance, through the faint morning haze of evaporating dew, the line of the woods, of a still darker green, meeting the clear blue of the summer sky.

This invitation Katherine would have promptly refused, but for an appealing look from Phil, whose courage regarding a meeting with his enemy was fast evaporating.

Setting aside 4 ounces of the filtered liquid for further experimenting, I packed the residue from the press into a conical glass percolator and exhausted with dilute alcohol, evaporating the percolate in a water-bath to two ounces, mixing with the 12 ounces of expressed juice and adding 2 ounces of alcohol.

The natives harvest rice and cassada; supply the coasting trader's demand for palm-oil; raise tobacco; procure salt by evaporating sea-water; engage in hunting and fishing.

A stronger gust of the fitful wind filled the forest with the sulphurous vapors arising from the evaporating furnaces.

The snowstorm had covered the ropes with an icy sheetthis is now peeling off and falling with a clatter to the deck, from which the moist slush is rapidly evaporating.

Finally, his patience evaporating, he suddenly turned on the peasant and shouted at him, "Ong!

Very small seeds, such as lobelia and musk, should not be covered by earth, but a sheet of glass over the box is beneficial, as it keeps the moisture from evaporating too quickly.

You see, we thought if we told the young woman that here was a decent honest manhurrying over the rest of the descriptionjust evaporating for love of her, that she might be persuaded to come out and marry him.

CONDENSED MILK.Condensed milk is made by evaporating milk in a vacuum to one fifth its original volume; it is then canned like any other food by sealing at boiling temperature in air-tight cans.

An extract made by boiling the leaves in a large quantity of water, and evaporating the liquor with a strong fire, proves a bitter sufficiently grateful, without any disgustful flavour. 178.