"Filtration" Quotes from Famous Books
 ... lake, with terraced banks, whose bottom (covered with fine felspathic silt) is several hundred feet above that of the valley; it is half a mile long, and a quarter broad, and fed partly by glaciers of the second order on Chango-khang and Sebolah, and partly by filtration through the lateral moraine. ...
— Himalayan Journals (Complete) • J. D. Hooker
... which had long since drifted away from general topics, turned to the color and sparkle of some of the more famous wines absorbed these many years by their distinguished votaries. This was followed by the proper filtration and racking both of Ports and Madeiras, and whether milk or egg were best for the purpose—Kennedy recounting his experience of different vintages both here and abroad, the others joining in, and all with the same intense interest ...
— Kennedy Square • F. Hopkinson Smith
... Pacific and Indian oceans, has propounded a theory as to the abundance of fresh water in the atolls and islands on coral reefs, furnished by wells which ebb and flow with the tides. Assuming it to be impossible to separate salt from sea water by filtration, he suggests that the porous coral rock being permeated by salt water, the rain which falls on the surface must sink to the level of the surrounding sea, "and must accumulate there, displacing an equal bulk of sea water—and as the portion of the latter in the lower part of ...
— Ceylon; an Account of the Island Physical, Historical, and • James Emerson Tennent
... my watch. A fickle ray—the merest filtration of moonlight—glimmered on the dial. Fourteen minutes past one! "Past yin o'clock, and a dark, haary moarnin'." I recalled the bull voice of the watchman as he had called it on the night of our escape from the Castle—its very tones: and this echo of memory seemed to strike and reverberate the ...
— The Works of Robert Louis Stevenson - Swanston Edition Vol. 20 (of 25) • Robert Louis Stevenson
... you then taught transuding dews to pass Through time-fall'n woods, and root-inwove morass Age after age; and with filtration fine Dispart, from earths ...
— The Botanic Garden - A Poem in Two Parts. Part 1: The Economy of Vegetation • Erasmus Darwin
... a concept of the analogy between the vitalized school and a filtration-plant, we shall, perhaps, gain a clearer notion of the purpose of the school and come upon a juster estimate of its processes. The purpose of the filtration-plant is to purify, clarify, and render more conducive to life the stream that passes through, and ...
— The Vitalized School • Francis B. Pearson
... of the vessels of animals for the purposes of anatomical preparations, the colour of the injected fluid will not pass into many very minute vessels; which nevertheless uncoloured water, or spirits, or quicksilver will permeate. The same occurs in the filtration of some coloured fluids through paper, or very fine sand, where the colouring matter is not perfectly dissolved, but only diffused through the liquid. This has led some to imagine, that the cause of the whiteness of the hair in elderly people may arise from the diminution, or greater ...
— Zoonomia, Vol. II - Or, the Laws of Organic Life • Erasmus Darwin
... advocating a breaking down of the barrier between literary and vernacular speech. It should be a porous, a permeable bulwark, allowing of free filtration; but it should be none the less distinct and clearly recognised. Nor do I recommend an indiscriminate hospitality to all the linguistic inspirations of the American fancy. All I say is that neologisms should be judged on their merits, and not rejected with contumely for no better ...
— America To-day, Observations and Reflections • William Archer
... fermentation. But since they see that the air so produced is endowed with properties quite different from common air, they conclude, without experimental proofs, that this air has united with foreign materials, and that it must be purified from these admixed foreign particles by agitation and filtration with various liquids. I believe that there would be no hesitation in accepting this opinion, if one could only demonstrate clearly by experiments that a given quantity of air is capable of being completely converted into fixed or other kind of air by the admixture ...
— Discovery of Oxygen, Part 2 • Carl Wilhelm Scheele
... filter-paper, and prevents its breaking. The pump is only used in exceptional cases; nearly all the filtrations required by the assayer can be made without it. The usual methods of supporting the funnel during filtration are shown in fig. 19. Where the filtrate is not wanted, pickle bottles make convenient supports. After the precipitate has been thrown on the filter, it is washed. In washing, several washings with a small quantity of water are more effective than ...
— A Textbook of Assaying: For the Use of Those Connected with Mines. • Cornelius Beringer and John Jacob Beringer
... armies. These mobile filters are capable of filtering and sterilizing large quantities of water and delivering it to water carts or into stand pipes, ready to drink. A check is kept on the efficiency of the filtration and sterilization ...
— On the Fringe of the Great Fight • George G. Nasmith
... of the alchemists of old. But their failure to transmute the baser metals into gold resulted in the birth of chemistry. They did not succeed in what they attempted, but they brought into vogue the natural processes of sublimation, filtration, distillation, and crystallization; they invented the alembic, the retort, the sand-bath, the water-bath and other valuable instruments. To them is due the discovery of antimony, sulphuric ether and phosphorus, the cupellation of ...
— The Majesty of Calmness • William George Jordan
... perpendicular cliffs, which frown over the broken thread of green vegetation in the valley. Thick forests of palms stretch at various points along the low plain, where are springs plentifully furnished by filtration from the high ground on either hand. The various kinds of oasian culture are pursued here with success. Wheat and barley are produced in considerable quantities; and camels, asses, and goats find plentiful nourishment. The villages ...
— Narrative of a Mission to Central Africa Performed in the Years 1850-51, Volume 1 • James Richardson
... height above the bed of the river is 156 ft. The two lower stories are formed of hewn stones, placed together without the aid of any cement; but the mason work underneath the channel of the third or top story is of rough stones cemented, by which all filtration was prevented. The first or lowest row consists of six arches, with a span of 60 ft. each, except the largest, which has 75 ft. The second row consists of eleven arches of the same dimensions as the first, and the third of 35 arches of 15 ft. span. Astair from the ...
— The South of France—East Half • Charles Bertram Black
... into the cells and kill them, and that the effects are in principle the same as those of parasitic fungi. Support is found for this opinion in Beyerinck's discovery that the juices of tobacco plants affected with the disease known as "leaf mosaic," will induce this disease after filtration through porcelain. ...
— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 - "Baconthorpe" to "Bankruptcy" • Various
... which are required to be "light-tight," such as those used in photographic work, are generally formed by slightly grooving the frame and inserting a strip of black velvet. The friction of the high pile of the velvet prevents the filtration of light through ...
— Woodwork Joints - How they are Set Out, How Made and Where Used. • William Fairham
... when the Venerable Mother's coffin was opened before being consigned to its new resting-place, it was seen by many witnesses to be also filled with the same clear crystal fluid. The circumstance was easily explained by the gradual filtration of water into the vault, whence it had penetrated into the leaden case through small openings in the soldering. But although the presence of the water could be thus simply accounted for, contact with the remains of God's holy servant had given it ...
— The Life of the Venerable Mother Mary of the Incarnation • "A Religious of the Ursuline Community"
... about its unwholesome water for the low-lying tenement districts, and the traction company about the fewness and filthiness of its cars. The gas company had talked of putting in improved machinery; the water company had invited estimates on a filtration plant; the traction company had said a vague something about new cars as soon as car manufacturers could make definite promises as to delivery. But nothing had been done—as yet. Obviously a corporation, a large investment of capital, ...
— The Conflict • David Graham Phillips
... way undoubtedly is to underdrain the land, and then to distribute the sewage on the principle of intermittent downward filtration. This is rather expensive, and a customer is rarely willing to pay the bills for the same. I should always advise it as the best; but where not allowed to do so, I have had fair success with shallow French drains connecting with ...
— Scientific American Supplement, No. 484, April 11, 1885 • Various
... very finely divided carbon in the colloidal state are often formed. Such a substance does not deposit the black particles, even when filtered through kaolin, and hence convert pelt into leather possessing black colour on the surface. The hide in this case acts as a perfect filtration medium, whereby the surface layers retaining the coloured particles assume their colour; thus only the pure tanning matter enters into the interior, which then, according to the composition of the former, imparts a colour varying from white to light ...
— Synthetic Tannins • Georg Grasser
... of utilities is, however, not yet exhausted; there is one more with which we bring our notice to a close. After the washing of the fibre, a great quantity of refuse membraneous substance is obtained by filtration. This being moulded into the form of bricks, and dried, becomes excellent fuel, and gives off so much gas from the resin which it contains, that it may be used for lighting as well as heating. The making of a thousand hundredweights of ...
— Chambers's Edinburgh Journal, No. 458 - Volume 18, New Series, October 9, 1852 • Various
... cultivated fields, and particularly where they pass in the neighborhood of houses, their waters should never be looked upon as being drinkable,—except after being boiled or properly filtered. Inasmuch as adequate filtration is exceedingly difficult to carry out, and requires a somewhat extensive and costly plant, this is, as a rule, not feasible for the dweller in country districts, and boiling, therefore, remains the only satisfactory method of rendering the water ...
— Health on the Farm - A Manual of Rural Sanitation and Hygiene • H. F. Harris
... end of the day Calhoun finished his task. He had a matter of six or seven cubic centimeters of clear liquid as the conclusion of a long process of culturing, and examination by microscope, and again culturing plus final filtration. He looked at a clock ...
— This World Is Taboo • Murray Leinster
... through the gills and lungs, through the sweat glands of the skin. So that when the body is confronted by actual disease, it has all ready to its hand a remarkably effective and resourceful system of sanitary appliances—sewer-flushing, garbage-burning, filtration. In fact, this is precisely what it does when attacked by poisons from without: it neutralizes and eliminates them by the same methods which it has been practicing for millions of years ...
— Preventable Diseases • Woods Hutchinson
... which the turbid waters become purified. One is, by being filtered through the sands under ground; and the other is, by 'settling', as we call it, in the lakes. The water of the fountain that we saw on our way to Ferney was beautifully clear, and it was made so by filtration in the sand, in coming down through the heart of the mountain. This water, on the other hand, is made clear by its impurities subsiding in ...
— Rollo in Geneva • Jacob Abbott
... Sons and daughters married and set up homes, morally, intellectually, economically, like those of their parents. Over great areas homogeneous traditions held, and it needed wars and conquests, or it needed missionaries and persecutors and conflicts, or it needed many generations of intercourse and filtration before a new tradition could replace or graft itself upon the old. But in the past hundred years or so the home conditions of the children of our English-speaking population have shown a disposition to break from tradition under influences that are ...
— Mankind in the Making • H. G. Wells
... most excellent because they have their origin with a childlike people who live wholly in the imagination. By means of the Arabian filtration, which took place in Cairo in the flourishing period of the Egyptian caliphs, all that was too characteristically Indian was excluded, and they were made in the "Tales of Scheherezade," a book for all peoples, with ...
— Pedagogics as a System • Karl Rosenkranz
... supply of Pittsburgh is taken from the Allegheny River and pumped into reservoirs, the highest of which is Herron Hill, five hundred and thirty feet above the river. A slow sand filtration plant for the filtration of the entire supply is under construction and a part of it is in operation. In this last year the Legislature has passed an act prohibiting the deposit of sewage material in the rivers of the State, and this tardy action in ...
— A Short History of Pittsburgh • Samuel Harden Church
... process. In the first case the action of the hydathode should continue even after the treatment with the sublimate solution, while in the latter case it should not. As the secretion ceased the obvious conclusion to be deduced from this experiment is that the hydathodes do not act as purely mechanical filtration-apparatuses, as one might have thought, but that there is here evidence of an active vital process in the plant; the unusual term "poisoning" is therefore really ...
— At the Deathbed of Darwinism - A Series of Papers • Eberhard Dennert
... copper, while the supernatant liquid contains free acetic acid. After a while the precipitate becomes gradually crystalline, at the same time forming a beautiful green pigment, which is separated from the liquid by filtration, and after washing and carefully drying is ready for use. The mode of preparing this pigment on a large scale was originally devised by M. Braconnot, as follows: 15 kilos. of sulphate of copper are dissolved in the smallest quantity of boiling water, and mixed with ...
— Scientific American Supplement, No. 455, September 20, 1884 • Various
... collections attracting their attention. It is impossible to have anything to do with the French working classes, and not observe the effect of this artistic culture, and here and there throughout this work I have adduced instances in point. We have nothing in England to be compared to the general filtration of artistic ideas, by means of gratuitous art and technical instruction, and the opening on Sunday of all art and ...
— Holidays in Eastern France • Matilda Betham-Edwards
... the east-wind blows. In this slit, by the help of your knife to open it, he directs that a leaf of the tree be inserted, first fitted to the dimensions of the slit, from which the sap will distil in manner of filtration: Take away the leaf, and the bark will close again, a little earth being clapped to the slit. Thus the Knight for any tree. But we have already shew'd how the birch is to be treated: Fasten therefore a bottle, or some such convenient ...
— Sylva, Vol. 1 (of 2) - Or A Discourse of Forest Trees • John Evelyn
... translucent and fit for all purposes." In the name of our rights and liberties! in the name of Judy and our country! we call upon the proper authorities to have this invaluable apparatus erected in the lobby of the House of Commons, and so, by compelling every member to submit to the operation of filtration, cleanse the house from its present accumulation of corruption, though we defy Stuckey himself to ...
— Punch, or the London Charivari, Vol. 1, August 21, 1841 • Various
... water is naturally good and soft. The spots at which it is raised from the Thames used to be within the bounds of the metropolis, at no great distance from the mouths of common sewers; but it is now obtained from parts of the river much higher up, and undergoes a very extensive filtration, with which eight companies are concerned. The returns of the registrar-general showed that the average daily supply of water for all purposes to the London population, during August, 1870, was 127,649,728 gallons, of which it is estimated the supply for domestic purposes amounted to about 90,000,000 ...
— Dickens' London • Francis Miltoun
... combination with the gold would also be absorbed by the chlorine; or, again, from some locally chemical peculiarity in the water or the ore, gold held in solution by the water might be again precipitated in the tailings before filtration was complete, and thus be lost. Henderson, Clark, De Lacy, Mears, and Deacon, all introduced improvements, or what were claimed to be improvements, on Plattner, but these chiefly failed because they did not cover every particular variety of case which gold extraction presented. ...
— Scientific American Supplement, No. 620, November 19,1887 • Various
... the maximum yield, it is necessary to cool the hydrochloric acid solution of the phenylhydrazine hydrochloride from 20'0 to 0'0, before filtration. From 5 to 10 per cent of product separates between these two temperatures. When this is done, no more phenylhydrazine hydrochloride is obtained by concentration of the mother liquor. An increase in the amount of hydrochloric acid above 2 l. for the ...
— Organic Syntheses • James Bryant Conant
... the diphtheria bacillus. This poison is easily obtained by causing the diphtheria bacillus to grow in common media in the laboratory for a while, and the toxines develop in quantity; then, by proper filtration, the bacteria themselves can be removed, leaving a pure solution of the toxic poison. Small quantities of this poison are inoculated into the horse at successive intervals. The effect on the horse is the same ...
— The Story Of Germ Life • H. W. Conn
... Copper Vessels, Iron Vessels (Cast), Iron Vessels (Wrought), Iron Vessels (Silvered), Iron Vessels (Enamelled), Steam Superheated Plant, Hot-air Plant.—Spirit Varnish Manufacture: Cold Solution Plant, Mechanical Agitators, Hot Solution Plant, Jacketted Pans, Mechanical Agitators, Clarification and Filtration, Bleaching Plant, Storage Plant.—Manufacture, Characteristics and Uses of the Spirit Varnishes yielded by: Amber, Copal, Dammar, Shellac, Mastic, Sandarac, Rosin, Asphalt, India Rubber, Gutta Percha, Collodion, Celluloid, Resinates, ...
— The Dyeing of Cotton Fabrics - A Practical Handbook for the Dyer and Student • Franklin Beech
... of the process is as follows:—"The ore is crushed to a certain fineness, depending on the character of the gangue. It is then placed in leaching vats, with false bottoms for filtration, similar to other leaching plants. A solution of cyanide of potassium and other chemicals of known percentage is run over the pulp and left to stand a certain number of hours, depending on the amount of metal to be extracted. ...
— Getting Gold • J. C. F. Johnson
... and in a short time briskness and activity will be restored to the liquor, whether intended for draft or bottle. This mode might, with equal success, be applied to every kind of fermented liquor, particularly to cider, wine, and perry, also to river and rain water. There are two modes of filtration, one by descent, the other by ascent; the latter operation seems to be the most perfect, though not ...
— The American Practical Brewer and Tanner • Joseph Coppinger
... leans to a method of coffee making known as filtration. This consists in pouring boiling water once through finely pulverized coffee confined in a close-meshed muslin bag. The resultant infusion is one in which the percentage of tannin is extremely low. There is a medium amount of caffeine, but the full flavor and characteristic taste ...
— The Suffrage Cook Book • L. O. Kleber
... trouble to send word directly to Orde, up river; but left him to be informed by the slow process of filtration through the bookkeepers. The interim of several hours before Heinzman appeared he spent very comfortably in his easy chair, dipping into a small ...
— The Riverman • Stewart Edward White
... our friend in this matter. Nature is always clarifying her water and her wine. No filtration can be so perfect. She does the same thing by books as by her gases and plants. There is always a selection in writers, and then a selection from the selection. In the first place, all books that get fairly into the vital air of the world were written by the successful ...
— The Atlantic Monthly, Vol. I., No. 3, January 1858 - A Magazine of Literature, Art, and Politics • Various
... 11 parks, comprising 402 acres; the most notable is Washington Park, which contains two well known statues—one of Robert Burns, by Charles Caverley, and the bronze and rock fountain, "Moses at the Rock of Horeb," by J. Massey Rhind. The city's filtration system is of special interest to engineers; it occupies 20 acres, has eight filter beds, and filters 15,000,000 ...
— The Greatest Highway in the World • Anonymous
... proposed to use hydrogen dioxide for saccharine juice purification. The alkalinity of juice is reduced to 0.07 by a judicious use of lime. Precaution must be taken to keep the temperature at 87 deg. F. After a preliminary filtration about 4 per cent. hydrogen dioxide is added. The whole is then heated to the boiling point, after which 1/2 to 1 per cent. lime is added. When alkalinity of filtrate is 0.03 phosphoric acid and magnesia are added, ...
— Scientific American Supplement, No. 832, December 12, 1891 • Various |
