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Updated: May 15, 2025
At the same moment, the wind, smelling salt of the open ocean, and carrying particles of sand, struck me with its full force, so that I had to bow my head. When I raised it again to look about me, I was aware of a light in the pavilion. It was not stationary; but passed from one window to another as though some one were reviewing the different apartments with a lamp or candle.
As the very dust grows golden and precious where certain workmanship is carried on, the touch and step and speech of those who had come ordering, consulting, coaxing, beseeching, to her apartments, had filled them with infinitesimal particles of a sublime efflorescence, by which the air itself in which they floated became not the air of shop or business or down-town street but the air of drawing-room, and bon-ton, and Beacon Hill or the New Land.
That the Light as we see it could be produced by the reflection of sunlight from swarms of particles careering round the earth in the manner supposed by Arrhenius' hypothesis is evident enough; and it will be observed that the new theory, after all, is only another variant of the older one which attributes the Zodiacal Light to an extension of the solar corona.
The sediment it deposits, consists of very fine particles of white sand while that of the Missoury is composed principally of a dark rich loam-in much greater quantity
This comparison is made advisedly, inasmuch as, regardless of the quality and value of the glass, it is composed mainly of those minute and fragmentary particles often more rich in colour than design.
Do not raise the temperature above moderate redness until the precipitate is white. If the ignited precipitate is persistently discolored by particles of unburned carbon, moisten the mass with a drop or two of concentrated nitric acid and heat cautiously, finally igniting strongly.
But the case is entirely changed when the ocean contains solid particles in a state of mechanical suspension, capable of sending the light impinging on them back to the eye. Throw, for example, a white pebble, or a white dinner plate, into the blackest Atlantic water; as it sinks it becomes greener and greener, and, before it disappears, it reaches a vivid blue green.
The pelicans were apparently later in their movements; they allowed us to approach as near them as the swampy nature of the soil would permit; and even when a gun was discharged amongst them, only those moved off which the particles of shot disturbed.
But the most remarkable and interesting case of this kind of action is the imbibition of oxygen by metallic platinum. This metal, when massive, is of a lustrous white colour, but it may be brought, by separating it from its solutions, into so finely divided a state, that its particles no longer reflect light, and it forms a powder as black as soot.
The quicksilver, thus fastened in the wood, catches particles of gold, which must be scraped off when the time for "cleaning up" comes. Double Sluices. Sluices are sometimes made double that is, with a longitudinal division through the middle, so that there are two distinct sluice-boxes side by side.
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