Impurity

Examples

• The other half, however, attracted my attention at once by its singular freedom from stain or impurity of any kind. Wilkie Collins. The Woman in White.
• The most common impurity is gypsum and it is necessary to remove this gypsum before the salt can be considered pure. Various. The Wonder Book of Knowledge.
• Men were becoming aware that personally they needed protection and direction, cleansing from impurity, power beyond their own strength. H. G. Wells. The Outline of History_Being a Plain History of Life and Mankind.
• The resistance offered by silica to all impressions is exemplified in the case of flint which consists essentially of silica colored with some impurity. Various. The Wonder Book of Knowledge.
• The latter is the element that we breathe and which passes into the body, there to combine with the impurities resulting from the various life activities. Various. The Wonder Book of Knowledge.
• The lime was added as a flux, and acted to unite with itself the sand, clay and other impurities to form a slag or scoria. William Henry Doolittle. Inventions in the Century.
• Steel making consists mainly in so treating cast iron as to get rid of a part of the carbon and other impurities. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• When impure water is boiled, the steam from it does not contain any of the impurities because these are left behind in the vessel. Bertha M. Clark. General Science.
• In the can system the water is frozen from all four sides to the center, and imprisons in the center any air bubbles or impurities that may exist in the water. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• The albumen of the serum coagulates and rises to the surface in a scum which entangles the impurities and bone black, leaving the syrup light in color. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• Peppermint, spearmint and other oils used are triply distilled and absolutely free of all impurities. Various. The Wonder Book of Knowledge.
• The impurities remain behind in the kettle. Bertha M. Clark. General Science.
• After filtering it is again boiled, and if any scum or impurities appear on the surface they are removed, when the juice is to be bottled, corked tightly, and should be left for one year. William K. David. Secrets of Wise Men, Chemists and Great Physicians.
• Was it you, thus baptized unto Death, with these flying impurities now flung upon your face? Charles Dickens. Our Mutual Friend.
• This machine has practically solved the perplexing problem of separating impurities and foreign substances from chicle. Various. The Wonder Book of Knowledge.
• This stirring admitted air to the mass and the oxygen consumed and expelled the carbon, silicon, and other impurities. William Henry Doolittle. Inventions in the Century.
• The Alberger system of salt manufacture is a mechanical process which subjects the salt brine to a much higher temperature and removes the impurities by means of mechanical filters. Various. The Wonder Book of Knowledge.
• These blooms consist of particles of nearly pure iron cohering, but retaining still a quantity of slag or vitreous material, and other impurities, which slag, etc. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• He proposed to burn the coal in a smouldering fire, to expel the sulphur and other impurities existing in the form of phosphorus, hydrogen and oxygen, etc. William Henry Doolittle. Inventions in the Century.

Typist: Nelda