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Updated: May 13, 2025
Weigh out two portions of about 0.5 gram each and dissolve them in 50 cc. of water. Add 10 cc. of dilute nitric acid which has been recently boiled to expel the lower oxides of nitrogen, if any, and then add 5 cc. of the indicator solution.
Miss Dennihan, sister of "Doc" Dennihan, was undeniably If-only Jim's exact antithesis a scrupulously tidy, exacting lady, so severe in her virtues and so acrid in denunciations of the lack of down-east circumspection that nearly every man in camp shied off from her abode as he might have shied from a bath in nitric acid.
Hayward's process was really the same as that employed by Goodyear, the "curing" of the India-rubber being due in each case to the agency of sulphur, the principal difference between them being that Hayward's goods were dried by the sun, and Goodyear's with nitric acid. Hay ward set so small a value upon his discovery that he had readily sold it to his new employer.
If the throat is sore, rub it with warm vinegar and salt, or blister; walk him a little for exercise, administer the following: oil of croton, 5 drops; nitrate of potassa 4 to 6 drachms; potassio-tartrate of antimony, 1 drachm; spirit of nitric ether, 4 drachms to 1 oz; solution of acetate of ammonia 2 to 4 ozs.; and warm water sufficient to make a draught; and when the head is much affected, add a drachm of camphor.
Oil of rosemary has no effect when shaken with cold nitric acid, and imparts to it only a slightly darker color on heating. Oils treated with lye act just like pure oils. Far the purpose of determining the melting point of the fatty acids, 10 grammes of oil were saponified with 5 grammes of caustic potash on the water bath; some water and alcohol being added.
Firstly, a well known, often tried, but very bad method is to steep a piece of white new wood in a solution of nitric acid and water. When dry, old age will seem to have crept over and through it, but of a delusive and unnatural kind. The corrosive properties of the acid still remain and gradually disintegrate the fibres until the whole mass becomes rotten.
The best method of catching very fine gold by amalgamation is to cover a large copper plate with mercury, and let the dirt and water, in a thickness of not more than a quarter of an inch, pass over it slowly. There are various methods of covering copper plates with quicksilver. The first thing, in every case, is to wash the copper with diluted nitric acid, so as to remove all dirt and grease.
Their products consist of porus and adhesive plasters, lung protectors, sulphuric, hydrochloric, and nitric acids, and other chemicals and dye-stuffs, belting, paper stock, yarns, shoulder-braces, suspenders, shoe-linings, elastic webbing, sackings, rugs, mats, gauze undergarments, looms, harnesses, felting, hose, bunting, seamless flags, awning stripes, reeds, braid, cord, chalk-lines, picture cords, twines, belts, fire hose, leather, bolts, nuts, screws, washers, boilers, tanks, kettles, presses, fire-escapes, water-wheels, wire-heddles, card-clothing, wood-working and knitting machinery, cartridges, chimney-caps, stamps, tools, lathes, files, wire-cloth, scales, steel wire, paper boxes, music stands, mouldings, carriages, sleighs, shuttles, doors, sashes, blinds, furniture, asbestos covering, blotters, crayons, drain-pipe, glue, lamp-black, machine brushes, matches, croquet sets.
The solution which contains the greater portion of manganese, suspended as peroxide, must first, therefore, be boiled to decompose the ammonium carbonate; the remainder of the ammonium oxalate is neutralized with nitric acid, and the manganese converted into the sulphide by ammonium sulphide. The manganese sulphide is then ignited in a current of hydrogen, and weighed as such.
He poured the contents of a large pan into the mortar, whereupon a loud hissing sound broke the awesome silence of the room and a cloud of fumes arose. "Not a trace, doctor!" said the cowled man. "A little preparation of my own. It destroys the hardest known substance with the solitary exception of a certain clay in the same way that nitric acid would destroy tissue paper.
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