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Updated: June 13, 2025
The solution of acetate of morphine may be freed from excess of lead by hydrogen sulphide and filtered, excess of hydrogen sulphide driven off by heat, and tests applied. Put the meconate of lead with water into a beaker and pass hydrogen sulphide; sulphide of lead is formed, and meconic acid set free. Filter.
The latter method is hardly practicable, and I never have time to use it, as the titration and all together yields a value of 99.80 in most cases, if accurately executed. From the bases of groups V. and VI. these are separated by hydrogen sulphide, from iron in alloys, ores, etc., and in general the iron is separated as basic acetate, and the manganese afterward precipitated with chlorine.
When the current of gas has been passed in for some time, the hydrochloric acid is let enter, which dissolves the chromous acetate, and thus, in the absence of air, produces a solution of blue chromous chloride. It is advisable to use an excess of chromous acetate or an insufficient quantity of hydrochloric acid, so that there may be no free hydrochloric acid in the liquid.
It might be made a matter of unfriendly comment that, on the first day of May preceding that sad event, Castaing had purchased ten grains of acetate of morphia from a chemist in Paris, and on September 18, less than a month before Hippolyte's death, he had purchased another ten grains of acetate of morphia from the same chemist.
In this process the following precautions are to be observed: Spongy flocks always separate from the zinc used in the reduction, which float about in the acid liquid for a long time and give off minute gas bubbles. If poured into the solution of sodium acetate, they would contaminate the precipitate; and when dissolved in hydrochloric acid, would occasion a slight escape of hydrogen.
Cancer which are situated in the skin, and are sometimes called spider cancers, &c., may be cured by the following caustic: take of sulphate of iron, 1 part; and acetate of lead, 1 part; pulverize each separately, as fine as possible, and mix well together; then, by means of a probe or knitting-needle, touch the cancer with it every morning for three or four times, and you will be able to draw it all out; after which apply adhesive straps that it may heal.
In this manner a chromous acetate is obtained perfectly free from zinc. For the absorption of oxygen the compound just described is decomposed with hydrochloric acid in the following simple washing apparatus: Upon a shelf there are fixed side by side two ordinary preparation glasses, closed with caoutchouc stoppers, each having three perforations.
My second example of the action of crystallizing force is this: By sending a voltaic current through a liquid, you know that we decompose the liquid, and if it contains a metal, we liberate this metal by electrolysis. This small cell contains a solution of acetate of lead, which is chosen for our present purpose, because lead lends itself freely to this crystallizing power.
The chemical and mineral world furnish us with many instances of the growth and development of forms closely resembling the forms of the vegetable world. What is known as "metallic vegetation," as shown in the "lead tree," gives us an interesting example of this phenomenon. The experiment is performed by placing in a wide-necked bottle a clear acidulated solution of acetate of lead.
Through Goupil he succeeded in communicating with his mother in the hope that she would use her influence to stifle some of the more serious evidence against him. Through other prisoners he tried to get at the chemists from whom he had bought acetate of morphia, and persuade them to say that the preparation of morphia which he had purchased was harmless.
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