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Updated: September 2, 2024
Although chlorine is almost constantly present in plant tissues, it is not indispensable for most plants, and for those assimilating it in small amounts, our rainfall would seem to offer an ample supply. These facts open our eyes to the possible fertilizing influence of rains, and they also suggest to what extent rains may exert a corrosive action when they descend charged with acid vapors.
N.W. Shedd, M.I.T. OTTO, BARON V.D. PFORDTEN. The author makes use of a solution of chromous chloride, which he prepares as follows: He first heats chromic acid with concentrated hydrochloric acid, so as to obtain a strong green solution of chromic chloride free from chlorine. This is then reduced with zinc and hydrochloric acid.
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.
Specimens now unknown to general operators, for harmony of effect, have been, and may again be produced by the method pointed out above. I have found the best general effect, and the most certain result to follow from the use of the vapor of chlorine but this requires more than ordinary care. I would, therefore, recommend the use of iodine.
The substance I used was auric chloride, AuCl , which, as is well known, splits up on heating, first into aurous chloride, and at a higher temperature gives off all its chlorine and leaves metallic gold.
The absorption of the silver into the system is slow, as the albuminoid and chlorine combinations formed in the intestinal canal cannot be immediately dissolved again. In the tissues the absorbed silver salt is decomposed by the tissues, and the oxide and metallic silver separate.
The East Surrey Regiment, which defended the hill in the latter part of the battle for it, suffered severely. Faces and arms became shiny and gray-black. Membranes in the throats thickened, and lungs seemed to be eaten by the chlorine poison.
The negative ions of an electrolyte are attracted to the anode and are discharged on contact with it. Anions such as the chloride ion yield chlorine atoms, from which gaseous chlorine molecules are formed and escape. The oxygen escapes and the anhydrides, reacting with water, re-form nitric and sulphuric acids.
The question of entirely new war chemicals is of general interest. The first main group of substances with which we were faced during the war contained such types as chlorine and phosgene, whose chief line of attack was directed towards the respiratory system. Specific protection rapidly developed and, once obtained, led to violent attempts to penetrate it or "break it down."
=Iodoform.= Poisoning may result from its use in surgery. It produces delirium, sleepiness, and coma. It may lead to mental weakness or optic neuritis. It was formerly largely used as a hypnotic, and many fatal consequences ensued. It is prepared from alcohol and chlorine. Symptoms.
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