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Updated: June 20, 2025
If it is designed to mix the composition with paints, those composed of zinc-white and baryta should be chosen in preference to those composed of white lead and colored by vegetable matter, as chemical action will take place between the composition and paint last mentioned, and its color will be destroyed or changed by the gradual action of the sulphureted hydrogen produced.
Wolpert rightly sees one serious drawback to the use of baryta in an apparatus that has to be employed in schools, among children, and that is that this substance is poisonous. This gentleman therefore replaces the solution of baryta by water saturated with lime, which costs almost nothing, and the preparation of which is exceedingly simple. Moreover, it is a harmless agent.
If sulphuric or oxalic acid are taken, pounded chalk in water is the best antidote. If those are not at hand, strong soapsuds have been found effective. Large quantities of tepid water should be drank after these antidotes are taken, so as to produce vomiting. Lime or baryta and its compounds demand a solution of glauber salts or of sulphuric acid.
Another white composition, used for charging ¾ inch flambeaux, consists of 1,000 parts of chlorate of potash, 1,000 of nitrate of baryta, and 175 of boiled oil.
Come Magnesia! come Potash! come Lime, Soda, Lithia, and Baryta! Come ye all to the presence of Prince Saturation." There glided to the Sponge's feet a number of leather-looking beings, of broad, circular faces, and to every face a tail was appended on the other side. "The gentleman don't like our laboratory," exclaimed the Sponge, purring the while like a cat.
When boiled with baryta water, sinapine decomposes into sinapic acid, C H O , and choline, C H NO , the latter a well-known constituent of the bile, and produced also in the decomposition of the lecithin of the brain and yolk of egg. Cocaine, the alkaloid of coca leaves, is decomposed by heating with hydrochloric acid into methyl alcohol, benzoic acid, and a crystalline base, ecgonine, C H NO .
In the third case are some remarkable varieties of silicates, which contain borates from Norway and other countries; and in the fourth case are the first in order, of the carbonates, including carbonates of soda, the beautiful crystals of carbonate of baryta, carbonate of strontia and aragonites, from Aragon, Hungary, Bohemia, and Vesuvius; and in the next case are deposited further varieties of aragonite, and some remarkable varieties of calcite, or carbonate of lime.
F., having a formula according to them of C H NO . They have also studied the splitting up of the alkaloid by means of baryta water, and have obtained an acid which they have named hyoscinic acid, and which melts at about 219 deg. F., and a basic body, hyoscine, C H N. They represent the reaction as follows: C H NO = C H O + C H N.
From sulphur or iodine, by decomposing with sulphuric acid and separating this with baryta chloride. It is now nearly forty years since the presence of chlorophyl in certain species of planarian worms was recognized by Schultze.
I found Sherlock Holmes alone, however, half asleep, with his long, thin form curled up in the recesses of his armchair. A formidable array of bottles and test-tubes, with the pungent, cleanly smell of hydrochloric acid, told me that he had spent his day in the chemical work which was so dear to him. "Well, have you solved it?" I asked as I entered. "Yes. It was the bisulphate of baryta."
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