My Web Site Page 300

Ovations

Sitemaps

The methods of assaying are best classed under two heads, Gravimetric and Volumetric, in the former of which the final results are weighed, whilst in the latter they are measured. A commoner and older division is expressed in the terms much used in practice--wet assays and dry assays. Wet assays include all those in which solvents, &c. (liquid at the ordinary temperature), are mainly used; and dry assays, those in which solid re-agents are almost exclusively employed. Dry assays form a branch of gravimetric work, and we shall include under this head all those assays requiring the help of a wind furnace. Wet assays, as generally understood, would include not only those which we class as wet gravimetric assays, but also all the volumetric processes. ~Gravimetric Methods~ aim at the separation of the substance from the other matters present in the ore, so that it may be weighed; and, therefore, they must yield the _whole_ of the substance in a pure state. It is not necessary that a metal should be weighed as metal; it may be weighed in the form of a compound of definite and well known composition. For example, one part by weight of silver chloride contains (and, if pure, always contains) 0.7527 part of silver; and a quantity of this metal can be as exactly determined by weighing it as chloride as by weighing it in the metallic state. But in either case the metal or its chloride must be pure.

At first Dutch art was influenced, even confounded, with that of Flanders. The Van Eycks led the way, and painters like Bouts and others, though Dutch by birth, became Flemish by adoption in their art at least. When the Flemish painters fell to copying Italy some of the Dutch followed them, but with no great enthusiasm. Suddenly, at the beginning of the seventeenth century, when Holland had gained political independence, Dutch art struck off by itself, became original, became famous. It pictured native life with verve, skill, keenness of insight, and fine pictorial view. Limited it was; it never soared like Italian art, never became universal or world-embracing. It was distinct, individual, national, something that spoke for Holland, but little beyond it.

This page is Copyright © After Burner. All Rights Reserved. My Web Site Page 300 is a production of After Burner and may not be reproduced electronically or graphically for commercial uses. Personal reproductions and browser or search engine caching are acceptable.

Ovations provided by My Web Site Page 300 are included only for information. The entertainment value of My Web Site Page 300's ovations may vary on the basis of your personal needs. After Burner and My Web Site Page 300 take no responsibility for the content provided by other Web sites. Links are provided "as is" without liability or warranty.