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Mary Thacher Higginson, Thomas Wentworth Higginson: the story of his life 34 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 26 0 Browse Search
Cambridge History of American Literature: volume 2 (ed. Trent, William Peterfield, 1862-1939., Erskine, John, 1879-1951., Sherman, Stuart Pratt, 1881-1926., Van Doren, Carl, 1885-1950.) 18 0 Browse Search
Alfred Roman, The military operations of General Beauregard in the war between the states, 1861 to 1865 17 1 Browse Search
Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: Volume 2. 16 0 Browse Search
Francis Jackson Garrison, William Lloyd Garrison, 1805-1879; the story of his life told by his children: volume 2 12 0 Browse Search
Thomas Wentworth Higginson, Women and Men 10 0 Browse Search
Benson J. Lossing, Pictorial Field Book of the Civil War. Volume 1. 10 0 Browse Search
The Daily Dispatch: may 2, 1861., [Electronic resource] 10 2 Browse Search
The Daily Dispatch: may 17, 1861., [Electronic resource] 10 0 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Harper or search for Harper in all documents.

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The West Point Observatory about 1841. The Tuscaloosa Observatory in 1843. The Washington Observatory about 1844. The Georgetown, D. C., Observatory in 1844. The Cincinnati Observatory in 1845. The Cambridge Observatory in 1847. The Amherst Observatory in 1847. Dartmouth, Newark, Shelbyville, Ky., Buffalo, Michigan University, Albany, and Hamilton College, have also observatories. A good article on the astronomical observatories of the United States may be found in Harper's Magazine, June, 1856. See also Observations at the Washington Observatory, volume for 1845. For more full details than in the articles named, see Chambers's Astronomy; Dr. Pearson's Practical Astronomy; Loomis's Practical Astronomy; Simm's Treatise on Instruments; Heather on Mathematical Instruments. As-tro-nom′i-cal Lan′tern. One with panes or slides having perforations whose relative size and position represent stars in a given field of the heavens. Astronomical telescope.
rmentation, or an equivalent chemical treatment. The practice has been to suffer the bone-black to ferment in a heap, to decompose the organic matter, after which it is washed, dried, and recalcined, acquiring again its full decolorizing powers, but having lost a portion, due to the crumbling in the various processes through which it is passed. This is calculated by Fleischman to be from 12 to 15 per cent per annum; by an English author, to be 6 per cent on each turning; and by a writer in Harper, who has studied the economy of the Cuban systems, at 10 per cent for each use, which is probably an extreme calculation. Much depends upon the system adopted in its revivification. This is done in several ways:— 1. Calcination in iron pots. 2. Calcination in retorts; horizontal or vertical. 3. Purging by highly heated steam. 4. Roasting in open revolving-cylinders. 5. Washing in dilute hydrochloric acid. 6. Washing in a dilute lye of potash or soda. Fig. 786 shows one
in the Edinburgh Review in partially describing the complex action of the machine, and gave up other features as hopeless without a mass of illustrative diagrams, we shall be pardoned for not occupying space by attempting farther description. Harper's Magazine, Vol. XXX. pp. 34-39, gives some account of it, accompanied by a cut. G. and E. Scheutz, Swedish engineers, constructed a working machine, 1837-43, after studying the Babbage machine; it was brought to England in 1854. It is statets of the printing process. See printing. With the games this work has nothing to do, and perhaps, but for M. I. Brunel, the subject would not have been referred to here. A good article on the subject of cards and dice may be consulted in Harper's Magazine, Vol. XXVI., pp. 163-176. Card′board. Cardboard is produced by pasting a number of sheets of paper together. Bristol board is all white paper, and is made of two or more sheets according to the thickness required. Other qualit
of gold are arrested and amalgamated. The bank of auriferous earth is washed into the sluice, thus prepared, by means of a powerful stream conducted through and directed by a pipe in the manner of a fire-engine. The water is brought to the scene of operations from immense distances, in some cases over one hundred miles, and the flumes and canals which form a network over the country are among the most remarkable local features (see flume). To quote from the description of A miner of 1849, Harper's Magazine, April, 1860: — To shovel a mass of several millions of tons of earth into this sluice for washing would be too expensive. By means of water directed through hose and pipe the labor of many men is cheaply performed, and the hill torn down to its base. The water is led through india-rubber or double canvas hose, and generally from a great hight above the scene of operations. It is consequently thrown with such force as to eat into the hillside as if the latter were sugar or s
ft an object a short distance, so as to get it on to a store truck. Suspensory lever-hoist. The bars slide longitudinally upon each other, and are supported by a connecting chain which passes over a pulley. A lever on one bar acts by raising and returning stirrups upon the rack teeth of the other to raise and depress them relatively, and the rack-bar actually. The lever is locked by a stop which restrains its motions. Hoisting-machine, St. Catharine's Convent, Mt. Sinai. (from Harper.) Hoist′ing-ma-chine′. A machine for hoisting ore, merchandise, miners, passengers, etc., in mines, warehouses, hotels, etc. A primitive hoisting-machine, which resembles the modern capstan, is used in the Convent of St. Catharine, at the foot of Mt. Sinai, to raise travelers to a door in the second story. This is a somewhat inconvenient and tedious operation, but is used in a land where robbers goon horseback. It is also worthy of remark, that the people of the land have no idea
in brick chambers. For detailed description of the process and apparatus, we must refer the reader to Ure's Dictionary and chemical treatises, as the subject is not so clearly within the scope of this work that it can be treated at any length. The extensive quicksilver mine of New Almaden is twelve miles from San Jose in California, and has had the benefit of energy, skill, and capital in its development. A good description of the place and the works was written in 1857, and given in Harper's Magazine, June, 1863. Changes may have since taken place. The mode of mining and breaking into pieces suitable for the furnace has nothing peculiar to offer, but the condensing-furnaces are worthy of notice. They are sixteen in number, arranged side by side, and extend a distance of several hundred feet beneath a spacious roof. They stand 8 feet apart, are 40 feet in length, 10 in hight, and 8 in breadth. The ore is cleaned, broken, and dumped into the receiving-chamber, which is next
They vary in depth from 100 to 1,100 feet. After a spot is decided upon, a derrick is built, having four diverging posts planted upon a base of about 12 feet square, and having a hight of 40 feet. So great interest has been felt in the subject, and so frequently has the matter been described in the magazines and journals of the day, that we do not deem it advisable to afford much space to the description of the modus operandi. We give a condensation of the description given by a writer in Harper's magazine. Oil-flowing well. Drilling-tools. The engine-house being erected and the necessary machinery all ready therein, sections of iron pipe, 6 inches in diameter, are driven into the ground by means of a pile-driver until the first layer of rock is reached, which, in most cases, is found at a depth of 35 or 40 feet below the surface of the ground. Great care is taken that this iron pipe is driven plumb. After the rock is reached and the earth within the pipe is removed, a bl
Apr. 26, 1870. 105,123PepperJuly 5, 1870. 106,032CoonAug. 2, 1870. 106,249BennorAug. 9, 1870. 106,307BarnesAug. 16, 1870. 107,041HarlowSept. 6, 1870. 108,020HarperOct. 4, 1870. 109,828MacaulayDec. 6, 1870. 111,359MackJan. 31, 1871. 111,452HigginsJan. 31, 1871. 112,033HancockFeb. 21, 1871. 114,197RehfussApr. 25, 1871. 117,002SherwoodJuly 11, 1871. 117,262CraneJuly 25, 1871. 120,815HarperNov. 14, 1871. 121,186MeriamNov. 21, 1871. 121,896RehfussDec. 12, 1871. 123,493MackFeb. 6, 1872. 123,892HallFeb. 20, 1872. 128,640LambJuly 2, 1872. 130,715Hoppe et al.Aug. 20, 1872. 131,735BrownOct. 1, 1872. (Reissue.)5,046BrownSept. 3, 1872. 132,3naces. (Stratton, 1817 and 1822.) Sexton, in 1856 (p, Fig. 5920), had a covered fuel-cylinder in the fire-chamber. Magazine-stoves. (Nott, 1830) (Mott.) (Harper and Walker, 1839.) Cantelo's U. S. patent in 1859 (Fig. 5921) shows a petticoat fuel-cylinder projecting downward into the fire-pot. Magazine-stoves. (Can
1860. 34,265.RayJanuary28, 1862. 36,991.BrownNovember25, 1862. 38,955.FeltJune23, 1863. 52,073.PauldingJanuary16, 1866. 52,254.Allen and MackayJanuary23, 1866. 57,034.BaerAugust7, 1866. 59,786.Van GiesonNovember20, 1866. 04,200.Coney and HarperApril30, 1867. 71,610.HarperDecember3, 1867. 75,681.HoustonMarch17, 1868. 84,273.FosterNovember24, 1868. 85,251.SlingerlandDecember22, 1868. 91,988.UmstadterJune29, 1869. 95,853.ThomeOctober12, 1869. 97,801.DelcambreDecember14, 1869. 100,3HarperDecember3, 1867. 75,681.HoustonMarch17, 1868. 84,273.FosterNovember24, 1868. 85,251.SlingerlandDecember22, 1868. 91,988.UmstadterJune29, 1869. 95,853.ThomeOctober12, 1869. 97,801.DelcambreDecember14, 1869. 100,366.BrownMarch1, 1870. 102,183.ThompsonApril19, 1870. 104,236.Westcott and RiderJune14, 1870. 105,855.SlingerlandJuly26, 1870. 108,813.MorganNovember1, 1870. 108,980.De la PenaNovember8, 1870. 110,077.ShipleyDecember13, 1870. 113,912.Neff and ScruggsApril18, 1871. 114,850.PlunkettMay16, 1871. 115,777.SlingerlandJune6, 1871. 115,796.WestcottJune6, 1871. 120,398.RayOctober31, 1871. 122,744.ThompsonJanuary16, 1872. 126,262.BrownApril30, 1872. 126,944.FarnhamMay21, 1872. 130,485.CoreyA