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Updated: June 1, 2025
Then, before it be exposed to the vapor of mercury, expose it for a very brief period to the vapor of either chlorine, bromine or iodine. Then expose over mercury, as usual. I have produced singularly interesting results by this process. To Purify Water. Filter the water well, and then add about three drops of nitric acid to the pint.
This mixture was used by me in 1849, and is given as it appeared in my "System of Photography," published at the above date: Take pure rain or distilled water, one quart, filter through paper into a ground stopper bottle, and add, for warm weather, one and a half ounce chloride of iodine; or for cold, one ounce; then add one ounce bromine, and shake well.
Many other examples, including such important products as bromine, oxalic acid, and aniline, could be quoted to show the results of the German price-cutting policy. The direct significance of bromine for chemical warfare must be borne in mind. Full Line Forcing.
At 4 P.M. that day M. Langlois had wished to pour some bromine into a bottle. He had done this clumsily, so that some of the bromine flowed on to his left hand, which held the funnel, and at once burnt him severely.
Hence, statuary, monuments, and all objects of like character, were remarkably well delineated by the original process of Daguerre; the plate being coated with iodine alone. An excess of bromine, to a certain degree, has the opposite effect; the white portions of the impression appearing of a dull, leaden hue, while those which should be black, or dark, appear quite light.
A possible source of bromine existed in the French Tunisian salt lagoons, whose pre-war exploitation had been considered by an Austrian combination. The French wisely developed a Tunisian bromine industry sufficient for their own needs, and, on different occasions, supplied us with small quantities. But the development of such an enterprise in time of war was a severe handicap.
It produces a fine-toned picture, but is not considered as sure as the lime water quick: Take rain water one quart, add pulverized alum until it is a little sour to the taste, and a small piece, say one half inch square, of magnesia. Filter through paper, and add chloride of iodine one half ounce, bromine sufficient to take it up, which is a little less than half an ounce.
This is done by individuals in this city, who get well paid for the deception. For the successful application of bromine as an accelerating agent, we are indebted to Mr. John Goddard of London, who at the time was associated with Mr. John Johnson, now a resident of this city. Preparation.
We have a well-founded hope that, with the exclusion of perhaps small quantities, we shall be in a position to buy up the total production of the country. Bromine, together with chloral, is used in making nitric gases, which are of such great importance in trench warfare. Without bromine these nitric gases are of slight effect: in connection with bromine they are of terrible effect.
In preparing large quantities of this, we adopt the following method: Fill a four-quart bottle about two-thirds full of hydrate of lime; pour into this about one or two ounces of bromine; then shake well, add more of the bromine, shake well and let it stand for a few hours, adding sufficient bromine to give it a fine red color.
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