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The operation was successfully completed, and on the 20th of May, twelve days after commencing it, the engineer was the possessor of the agent which later he hoped to use in so many different ways. Now, why did he wish for this agent? Simply to produce azotic acid; and that was easy, since saltpeter, attacked by sulphuric acid, gives azotic, or nitric, acid by distillation.
Mince up the coats of the stomach and boil them in water, or boil the contents of the stomach and subject them to dialysis. Concentrate the distilled water outside the tube containing the vomited matters, etc., and apply tests. Tests. White precipitate with nitrate of silver, soluble in nitric acid and ammonia.
Take of camphor water 4 oz., nitric acid 4 drops, tincture of opium 40 to 60 drops; mix cork, and shake; dose, a tablespoonful every two hours in diarrhoea and dysentery. Take of tincture of opium 1 drm., liquor ammonia 1/2 drm., tincture of the oil of peppermint 1/2 drm., ether 25 drops, tincture of camphor 1 drm., tincture of capsicum, 1 drachm; mix, cork and shake.
The separated laminae are pure silver, which is to be digested with ammonia until it ceases to be colored blue. The silver, after being washed and dried, is again dissolved in nitric acid, and the liquid, diluted with water, is kept as solution, of silver. No matter how much salt is used, provided enough be added to throw down all the chloride of silver.
Pure siliceous rocks may be known by not effervescing when a drop of nitric, sulphuric or other acid is applied to them, or by the grains not being readily scratched or broken by ordinary pressure. In nature there is every intermediate gradation, from perfectly loose sand to the hardest sandstone.
If a little more ammonia is added, several varieties of rhombic octahedra appear; if a little nitric acid is added, the rectangular prism appears again. The changes take place not by the addition of new crystals, but by changing the growth of the original ones." These, however, may be said to be the same species, after all; but recent researches by Dr.
Then woe for all the wares below the Enfield rifles, the cannon powder, the cartridges, the saltpetre, bar steel, nitric acid, leather, cloth, salt, medicines, surgical instruments! Their outlooks kept sharp watch for disaster, heaving in sight in the shape of a row of blue frigates released from patrol duty.
A delicate test for the acid, free or in combination, is to dissolve in the suspected fluid some crystals of ferrous sulphate, and then to gently pour down the test-tube some strong sulphuric acid. Where the two liquids meet, if nitric acid be present, a reddish-brown ring will be formed. It turns the skin bright yellow, and does the same with woollen clothes, from the formation of picric acid.
While the organic matter applied to the soil contains about twenty times as much carbon as nitrogen, and while corresponding amounts of carbonic acid and important amounts of intermediate organic acids must be formed, it is of much interest to know that even the nitric acid formed in the transformation of organic nitrogen to nitrate nitrogen in sufficient quantity for a given crop is seven times as much acid as would be required to convert raw rock phosphate into soluble phosphate to furnish the phosphorus required for the same crop.
Yet many men have less absolute belief in a soul than in nitric acid; many men achieve lifetimes of triumph by the faithful use and application of Nature's law that is, formula of uniform occurrence in light, sound, motion, while they all the while outrage and violate and hinder every one of those sweet forces equally hers, equally immutable, called by such names as truth, sobriety, chastity, courage, and good-will.
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