"Silica" Quotes from Famous Books
 ... nature of gravel is too well known to require description. The grains of quartz sand are either sharp cornered or else rounded pieces of stone of quartz, occasionally mixed with grains of other amorphous pieces of silica—such as horn stone, silicious slate, carnelian, etc.; again, with lustrous pieces of mica, or red and white pieces of feldspar. The gravel used for a tar paper roof must be of a special nature and be prepared for the purpose. The size of ...
— Scientific American Supplement, No. 821, Sep. 26, 1891 • Various
... discoveries having led to the recognition of its presence in sulphuric, nitric, and many other acids, where its existence was not previously suspected, there is now a tendency to include the presence of this element in the connotation of the word. But carbonic acid, silica, sulphurous acid, have no hydrogen in their composition; that property can not, therefore, be connoted by the term, unless those substances are no longer to be considered acids. Causticity and fluidity have long since been excluded from the characteristics ...
— A System Of Logic, Ratiocinative And Inductive • John Stuart Mill
... dainty satin shoes. It brings home to me what an unstable chemical compound man is. Here are the stage accessories as good as ever, while the players have all split up into hydrogen and oxygen and nitrogen and carbon, with traces of iron and silica and phosphorus. A tray full of chemicals and three buckets of water,—there is the raw material of my lady in the sedan chair! It's a curious double picture, if one could but conjure it up. On the one side, the high-born bucks, the mincing ladies, ...
— The Stark Munro Letters • J. Stark Munro
... foods,—of which all of the tissues of the body are composed are: carbon, oxygen, hydrogen, nitrogen, potassium, soda, lime, magnesia, iron, manganese, phosphor, sulphur, silica, chlorine, fluorine ...
— Valere Aude - Dare to Be Healthy, Or, The Light of Physical Regeneration • Louis Dechmann
... constituents, up to veins filled with pure quartz, as at Porth Just, near Cape Cornwall; and, again, the same vein will in some parts be filled with felspar; in others, contain irregular masses of quartz, apparently the excess of silica beyond what has been absorbed in the trisilicate compound of felspar.* (* Mr. John Phillips in "Memoirs, Geological Survey of Great Britain" volume 2 page 45.) Granitic, porphyritic, and trappean dykes* also sometimes contain ...
— The Naturalist in Nicaragua • Thomas Belt
... eyes: it was cement stone! Absolutely, undoubtedly, cement stone! How far did it extend? As far as he could see; it might even extend to the boundary of the estate. In any case, here was sufficient for extensive works for many, many years, if only there were enough silica with the clay and lime. He had soon knocked off a few pieces, which he put into the boat, and set out for home ...
— Absalom's Hair • Bjornstjerne Bjornson
... kind of earth containing mostly alumina and silica or sand, that can be mixed with water, moulded into any shape, retain that shape after it is dry, and become hard by being burned. If you want to make a china cup, you must have a fine sort of clay called "kaolin," which is pure white when it is fired and is not very common; but ...
— Diggers in the Earth • Eva March Tappan
... made under difficulties; my materials had been carried off, nothing better than fine sugar-paper could be obtained, and the pencils seemed to contain more silica than plumbago. However, they were made, and the pass was again crossed, this time alone. By the following evening the old woman of Biona again produced the faithless guide. The knapsack was recovered after the lapse of several hours, and then I poured forth all the ...
— Seeing Europe with Famous Authors, Volume VI • Various
... MY BODY? Nay, surely not. I know that my body is only my outward garment woven by "me" out of certain chemical substances. In a scientific museum I can stand before a glass case and see neatly labelled the exact portions of lime and silica and iron and water and other elements which compose my body. I know that this body is continually changing its substance like the rainbow in the sky, like the eddy round a stone in the river. The ...
— The Gospel of the Hereafter • J. Paterson-Smyth
... even read papers at the local scientific societies. It is to be feared, however, that what Darwin would hear most of, as characteristic of the Huttonian teaching, would be assertions that chalk-flints were intrusions of molten silica, that fossil wood and other petrifactions had been impregnated with fused materials, that heat—but never water—was always the agent by which the induration and crystallisation of rock-materials (even siliceous conglomerate, limestone and rock-salt) ...
— Darwin and Modern Science • A.C. Seward and Others
... oil, some coal, bauxite, low-grade iron ore, calcium, natural asphalt, silica, mica, clays, ...
— The 2001 CIA World Factbook • United States. Central Intelligence Agency.
... at the same time a fluid, basic cinder, or slag, is produced, which covers a portion of the surface of the metal bath, and prevents too hasty oxidation. This slag results from the union of oxides of iron with the sand adhering to the pigs, and the silica resulting from the oxidation of the silicon contained in ...
— Scientific American Supplement, No. 441, June 14, 1884. • Various
... strata—clays, sandstones, conglomerates, limestones and even rock-salt—must be ascribed to the action of heat, and that even the formation of chalk-flints and the silicification of fossil wood were due to the injection of molten silica! ...
— The Coming of Evolution - The Story of a Great Revolution in Science • John W. (John Wesley) Judd
... difference between the nourishing action of the seminal fluids and a stimulating action than we could obtain by the employment of many words. It is interesting to remember that while it is possible to increase the mineral particles of soda, potash, lime, iron, silica and magnesia in the blood and lymph, it is practically impossible for us to increase the animal contents of the cells by any method of medication or dieting known to us. Only Life can produce this change in the cells, and only this method of gland-transplantation has furnished ...
— The Goat-gland Transplantation • Sydney B. Flower
... formed from any rock containing some form of combined silica (quartz). Thus, granites and crystalline rocks generally, volcanic rocks, and shales will produce clay if subjected to the proper climatic conditions. In the formation of clay, the extremely fine soil particles are attacked by the soil water and subjected to deep-going chemical ...
— Dry-Farming • John A. Widtsoe
... to find any one less informed about such phenomena than myself; but of course I had heard of mineral springs so saturated with silica that the leaves and twigs which fell into them were turned to stone after a time. I dimly comprehended the process, how the silica replaced the vegetable matter, atom by atom, and the result was a duplicate of the object in stone. This, I confess, had never interested me greatly, and as for ...
— The King In Yellow • Robert W. Chambers
... deprecating gesture. 'Really, Miss Kennedy, I do not see why the story books make it out such a misfortune for a man to be turned to stone. I think, in some circumstances, it is surely the best thing that can happen to him. There is Nightingale, now—he would feel no end better for a slight infusion of silica!'—and with another profound reverence, ...
— Wych Hazel • Susan and Anna Warner
... formation of Curnapaga was of three different kinds. A mixture of lime and clay, a tufaceous deposit, and an apparently recent deposit of soapstone, containing a variety of substances, as alumina, silica, lime, soda, magnesia, and iron. The ranges on either side of the glen were generally varieties of gneiss and granite, in many of which feldspar predominated, coarse ferruginous sandstone, and a siliceous rock with mammillary hematite and hornblende. These, and a great mixture of iron ores, composed ...
— Expedition into Central Australia • Charles Sturt
... water. Fourth, crystallization by gradual dilution. Fifth, filter paper without ash. In German laboratories it is customary to dissolve out the mineral matter from white filtering paper by washing in dilute hydrochloric and hydrofluoric acids. Sixth, the use of infusorial silica for drying purposes. Being very porous, it will absorb five times its own volume of water. If a filter paper, holding a wet precipitate, be placed upon a layer of this earth, it will become quite dry in a very short space of time. Mr. Austen also remarked that ...
— Scientific American, Volume XXXVI., No. 8, February 24, 1877 • Various
... are locked up in the staple, and are only dissolved out slowly as the rain, the dew, the ever-moving air, and the sunshine operate upon them and make them available. As the rock slowly yields up its phosphates, alkalies and silica to the wild vegetation that runs riot upon it, so the cultivated field (which is but rock in a state of decay) yields up its phosphates, alkalies and silica for the service of plants the more quickly because it is the practice of the cultivator to stir the soil and continually ...
— The Culture of Vegetables and Flowers From Seeds and Roots, 16th Edition • Sutton and Sons
... occur scarce half an inch apart? Why, for instance, should that vesicle have elaborated only green earth, and the vesicle separated from it by a partition barely a line in thickness, have elaborated only chalcedony? Why should this chamber contain only a quartzose compound of oxygen and silica, and that second chamber beside it contain only a calcareous compound of lime and carbonic acid? What law directed infiltrations so diverse to seek out for themselves vesicles in such close neighborhood, and to keep, in so many instances, each to his own vesicle? I can but state the ...
— The Cruise of the Betsey • Hugh Miller
... degrees 32 minutes South, Longitude 124 degrees 17 minutes East : Taken from rough range rising out of gently undulating desert. (July 5th.) : White flinty rock; consists in the main of Silica, with Magnesia and Alumina; it also contains water and traces of the Alkalies. It is probably derived from the decomposition of granite. The "rough ranges" are ...
— Explorations in Australia • John Forrest
... told me that sea-water is composed of an awful lot of things such as I would not have supposed—oxygen and hydrogen, with muriate of soda, magnesia, iron, lime, copper, silica, potash, chlorine, iodine, bromide, ammonia and silver being amongst its ingredients, and the muriate of soda forming the largest of the solid substances detected in it. With such a mixture of things as this, it is not surprising that it ...
— Afloat at Last - A Sailor Boy's Log of his Life at Sea • John Conroy Hutcheson
... cyanidation, where this process is the only hope of sufficiently moderate costs. A lead ore may be an amorphous compound with zinc, and successful concentration or smelting without great penalties may be precluded. A copper ore may carry a great excess of silica and be at the same time unconcentratable, and there may be no base mineral supply available for smelting mixture. The mine may be so small or so isolated that the cost of equipment will never be justified. Some of these conditions may be determined as unsurmountable, ...
— Principles of Mining - Valuation, Organization and Administration • Herbert C. Hoover
... carefully washed, and subjected by Mr. Buchanan to the action of weak acid; and he found that there remained after the carbonate of lime had been removed, about 1 per cent. of a reddish mud, consisting of silica, alumina, and the red oxide of iron. This experiment has been frequently repeated with different samples of Globigerina ooze, and always with the result that a small proportion of a red sediment remains, which possesses all the characters of the ...
— Discourses - Biological and Geological Essays • Thomas H. Huxley
... grimly to the mystery as the truck clattered on, mile after mile, while the broad road led along the sides of the hills, finally to dip downward and run beside the bubbling Clear Creek,—clear no longer in the memory of the oldest inhabitant; but soiled by the silica from ore deposits that, churned and rechurned, gave to the stream a whitish, almost milk-like character, as it twisted in and out of the tortuous canon on its turbulent journey to the sea. But ...
— The Cross-Cut • Courtney Ryley Cooper
... solid. The cementing process happens in this way in our rocks, which are almost purely silicious: Water containing a minute quantity of carbonic acid in solution, which most rain-water does, especially when it comes into contact with decaying vegetation, has the power of dissolving silica to a slight extent. This is proved in various ways, and is shown in the fact that all river water contains more ...
— The American Architect and Building News, Vol. 27, Jan-Mar, 1890 • Various
... This is formed into small cakes, which are baked to redness in an oven, or crucible, to expel the moisture and carbonic acid which it contains. They are then powdered to fine dust, which is placed in another crucible, and fused to liquid glass, the reha containing in itself sufficient silica to form the coarse glass used ...
— A Journey through the Kingdom of Oude, Volumes I & II • William Sleeman
... it is folly and ignorance to indulge in such grief, for science has analysed their friend, and preserved in a series of neat phials, which they may easily carry about with them, all his constituent elements, his "essentials," his carbon, his silica, this and that gas—everything, in short, which made up the substance of him whom they were accustomed to call their beloved; therefore they may "comfort one another with these words!" And thus would ...
— Parish Papers • Norman Macleod
... surrounding felspar. Chlorite also is abundant both in sheared and unsheared diabases, and with it calcite may make its appearance, or the lime set free from the augite may combine with the titanium of the iron oxide and with silica to form incrustations or borders of sphene around the original crystals of ilmenite. Epidote is another secondary lime-bearing mineral which results from the decomposition of the soda lime felspars and the pyroxenes. Many diabases, ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 - "Destructors" to "Diameter" • Various
... silver, alcohol, prussiate of potash, etc., had been left by mistake at Cumana. I evaporated some of the water of Mariara, and it yielded only a very small residuum, which, digested with nitric acid, appeared to contain only a little silica and extractive vegetable matter.) we contented ourselves with filling at the spring two bottles, which were sent, along with the nourishing milk of the tree called palo de vaca, to MM. Fourcroy and Vauquelin, ...
— Equinoctial Regions of America V2 • Alexander von Humboldt
... hair is a tube, containing an oil, of a color similar to its own. Hair contains at least ten distinct substances: sulphate of lime and magnesia, chlorides of sodium and potassium, phosphate of lime, peroxide of iron, silica, lactate of ammonia, oxide of manganese and margaim. Of these, sulphur is the most prominent, and it is upon this that certain metallic salts operate in changing the color of hair. Thus when the salts of lead or of mercury ...
— International Weekly Miscellany Of Literature, Art, and Science - Vol. I., July 22, 1850. No. 4. • Various
... substances highly radio-active. Pitchblende or uraninite is an intensely black mineral of a specific gravity of 9.5 and is found in commercial quantities in Bohemia, Cornwall in England and some other localities. It contains lead sulphide, lime silica, and other bodies. ...
— Marvels of Modern Science • Paul Severing
... unites with silica (a neutral), and forms a compound which water can dissolve and carry into the roots of plants; thus supplying them with an ingredient which gives them much ...
— The Elements of Agriculture - A Book for Young Farmers, with Questions Prepared for the Use of Schools • George E. Waring
... a little hammer and chipping one of the stones by us to show me that it was a sandstone full of hard fragments of silica. "You might open a quarry anywhere here and cut millstones, but of course some of the stone is better ...
— Patience Wins - War in the Works • George Manville Fenn
... through fine tubes into water and made so pliable that it can be twisted into cord or spun and woven into "silk." Not only water but also fire can be kept out by paper if it is treated with the proper substances. An object can be covered with a paste of wood pulp, silica, and hemp; and when this is dry, a coat of water-glass will afford considerable protection. There has been some degree of success in making transparent paper films for moving pictures; and if these ...
— Makers of Many Things • Eva March Tappan
... From here I visited the stalactite springs, not far distant, of Naglegbeng. [105] I had expected to see a calcareous fountain, but found the most magnificent masses of silica of infinite variety of form; shallow cones with cylindrical summits, pyramidal flights of steps, round basins with ribbed margins, and ponds of boiling water. One spot, denuded of trees, from two to three hundred paces in breadth and about five hundred ...
— The Former Philippines thru Foreign Eyes • Fedor Jagor; Tomas de Comyn; Chas. Wilkes; Rudolf Virchow.
... carbon, and for various purposes these are further mixed with nickel and silicas. Many other alloys have been discovered within the last few years, and each makes possible new uses for iron requiring greater strength. One of the best of these is a mixture of iron and silicon, called ferro-silicon. Silica is one of the cheapest and most abundant materials of all the earth's products, so its combination with iron will greatly lengthen the life of the iron supply; and it is probable that in the future combinations of other materials will yield better ...
— Checking the Waste - A Study in Conservation • Mary Huston Gregory
... spoke, the two men stepped out of the "testing shed"—the huge structure that housed their Osnomian-built space-cruiser, "Skylark II." Seaton waddled clumsily, wearing as he did a Crane vacuum-suit which, built of fur, canvas, metal and transparent silica, braced by steel netting and equipped with air-tanks and heaters, rendered its wearer independent of outside conditions of temperature and pressure. Outside this suit he wore a heavy harness of leather, ...
— Skylark Three • Edward Elmer Smith
... raise me. They was all kin. I was six months old when ma died. My sister nursed me but Miss Mary Ann Roscoe suckled me wid Miss Minnie. When Miss Minnie got grown and married she went to Mobile, Alabama to live. Later Brother Silica give me to Master Henry Harrell. They sent me to school. I never went to colored school. We went to Blunt Springs three months every year in the summer time. When we come home one year Mr. Hankton was gone and he never come back. ...
— Slave Narratives: A Folk History of Slavery in the United States - Volume II. Arkansas Narratives. Part I • Work Projects Administration
... investigate the conditions under which living plants separate this substance from their tissues. That unicellular algae, like the Diatomaceae, living in a medium which may contain only one part in 10,000 by weight of dissolved silica, or even less than that amount, should be able to separate this substance to form their exquisitely ornamented frustules is one of the most striking facts in natural history, whether we regard it in its physiological ...
— Scientific American Supplement, No. 595, May 28, 1887 • Various
... found, however, that a little marine wretch called the teredo attacks hemp so greedily that we've had to invent a new compound wherewith to coat it, namely, ground flint or silica, pitch, and tar, which gives the teredo the toothache, I suppose, for it turns him off effectually. We have also got an intermediate piece of cable to affix between the heavy shore-end and the light deep-sea ...
— The Battery and the Boiler - Adventures in Laying of Submarine Electric Cables • R.M. Ballantyne
... of refractive indices in my article "Light," Encyclopaedia Metropolitana). It was, however, too soft for optical use as an object- glass. This Faraday overcame, at least to a considerable degree, by the introduction of silica.' ...
— Faraday As A Discoverer • John Tyndall
... Ash Constituents.—It is frequently asserted that silica has a structural function sui generis in the plant skeleton, having a relationship to the cellulosic constituents of the plant, distinct from that of the inorganic ash components with which it is associated. It ...
— Researches on Cellulose - 1895-1900 • C. F. Cross
... its positive enclosed in an envelope. A very shallow porous tray (made of kaolin and silica) is filled with red lead paste, an electrode of rolled sheet lead is placed on its surface, and over this again is placed a second porous tray filled with paste. The whole then looks like a thin earthenware box with the lug of the electrode projecting from one end. The ...
— Project Gutenberg Encyclopedia
... steamer, stood before us, brimful of water just upon the simmer; while up into the air above our heads rose a great column of vapor, looking as if it was going to turn into the Fisherman's Genie. The ground above the brim was composed of layers of incrusted silica like the outside of an oyster shell, sloping gently down on all sides from the edge ...
— The Continental Monthly, Vol. 6, No 3, September 1864 - Devoted To Literature And National Policy • Various
... height of several hundred feet showed unmistakable signs of volcanic action beneath the crust over which we were traveling. A considerable portion of the slope of the mountain was covered with a hollow incrustation of sulphur and lime, or silica, from which issued in many places hot steam, and we found many small craters from six to twelve inches in diameter, from which issued the sound of the boiling sulphur or mud, and in many instances we could see the mud or sulphur water. There are many other ...
— The Discovery of Yellowstone Park • Nathaniel Pitt Langford
... as a support under both her sources of trouble, but Miss Betty ran on and back, and hither and thither, looking for the diamond. Miss Kitty and the parson looked too, and how many aggravating little bits of glass and silica, and shining nothings and good-for-nothings there are in the world, no one would believe who has not looked for a lost diamond on ...
— Tales from Many Sources - Vol. V • Various
... springs at Jigabo, province of Albay, the waters of which carry in solution a gelatinous silica, which is quickly incrusted on any object placed therein. See Report of U.S. Philippine Commission, ...
— The Philippine Islands, 1493-1898 • Emma Helen Blair
... made better charcoal than the silicate-heavy native wood. That was the only natural fuel on Uller; there was no coal, of course, since fallen timber and even standing dead trees petrified in a matter of a couple of years. There was too much silica on Uller, and not enough of anything else; what would be coal-seams on Terra were strata of silicified wood. And, of course, there was no petroleum. There was less charcoal being burned now than formerly; the Uller Company had been ...
— Uller Uprising • Henry Beam Piper, John D. Clark and John F. Carr
... a similar fashion, but the cellulose would be in far larger proportion. Straw, in fact, which consists of the dry stem and leaves of the wheat plant, is almost wholly made up of cellulose. Besides this, however, it contains a certain proportion of mineral bodies, among them, pure flint or silica; and, if you should ever see a wheat rick burnt, you will find more or less of this silica, in a glassy condition, in the embers. In the living plant, all these bodies are combined with a large proportion of water, or are dissolved, or ...
— A Book of Natural History - Young Folks' Library Volume XIV. • Various
... ordinary visitor care much about these questions of dedication and saint-lore? Probably not. South of Cadgwith are some of the grand caves and rock-freaks that have a more immediate appeal, and north of the hamlet some of the best serpentine is obtained. Serpentine is a blend of silica and manganese, so named from its imagined resemblance to a snake's skin; its colour varies from green to red and brownish yellow, and is often remarkably beautiful. It has been used with striking effect, architecturally, in Truro Cathedral; while ...
— The Cornwall Coast • Arthur L. Salmon
... here enacted, come upon the scene. Literally, they are the vents through which the steam and boiling water can escape. In doing so, however, the water, as at the Mammoth Springs, leaves a sediment of pure white lime or silica. Hence, from a distance, these basins look like desolate expanses of white sand. Beside them always flows a river which carries off the boiling water ...
— John L. Stoddard's Lectures, Vol. 10 (of 10) - Southern California; Grand Canon of the Colorado River; Yellowstone National Park • John L. Stoddard |
