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Updated: June 1, 2025
An atom of bromine will combine with one of hydrogen; one of oxygen with two of hydrogen; one of nitrogen with three of hydrogen; one of silicon with four of hydrogen, etc. They marry without thought of divorce. A group of atoms married by affinity is called a molecule. Two atoms of hydrogen joined to one of oxygen make water.
Bromide of Potassium Is prepared by mixing bromine and a solution of pure potass together, and evaporating to dryness; it crystallizes in small cubes, and dissolves readily in water. This agent is extensively employed in the paper and glass processes. Bromide of Lime. This the principal accelerator used in the American practice, and is the best of all dry combinations at present employed.
The Germans could have used sulphur gas just as well as chlorine gas, but sulphur was not poisonous, and would not kill; chlorine and bromine would. We had just learned that they were using red phosphorus in their shells, and that any particle of that chemical that got into a wound would set up gangrene from which hundreds of soldiers died in terrible agony.
Every experienced operator has in a degree become familiar with the mechanical uses of all the agents employed, while I fear but few understand the properties, and laws governing those properties, which are so indispensable to produce an image impressed upon the silver surface. There are three substances which form the bases for producing a Daguerreotype; silver, iodine and bromine.
PROCEDURE. To the filtrate from the insoluble residue add ammonium hydroxide until the solution just smells distinctly of ammonia, but do not add an excess. If the smell of ammonia has disappeared, again add ammonium hydroxide in slight excess, and 3 cc. of bromine water, and heat again for a few minutes. A brown residue insoluble in the acid may be allowed to remain on the filter.
It is necessary for our physical well-being to get air, sunshine, water, food, sleep, rest, exercise, work and play in proper proportion, and in addition cultivate a kindly, balanced spirit. Drugs, such as alcohol, coffee, morphine, bromine, and hundreds of others which could be named, are not only unnecessary, but harmful. The mental side is as important as the physical side.
The success of these efforts certainly placed us in a difficult situation during the war, both with regard to production of drugs and lachrymators. German bromine was associated with potash in the Stassfurt mineral deposits, whereas the American product was produced from numerous salt springs and rock salt mines.
Bromine is produced only in the United States and Germany. While, therefore, the material is on hand in satisfactory quantities for the Germans, the Allies are entirely dependent upon importation from America." Making due allowance for the fact that Dr.
It was shown that the merest trace of soluble haloid would reverse an image by the extraction of bromine from it, and the fact that the most refrangible part of the spectrum was principally efficacious in completing this action showed how necessary it was to avoid falling into error when analyzing photographic action by the spectroscope.
Bromine is generally used in place of chlorine, the use of which chemists claim as troublesome; but in a number of examinations I have found it to yield more satisfactory results than bromine, which is much more expensive.
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