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Updated: May 18, 2025
A good deal of the heavier carbon is deposited along the walls of chimneys in the form of soot, together with a small percentage of sulphate of ammonia; this is as a consequence very generally used for manure. The remainder is poured out into the atmosphere, there to undergo fresh changes, and to become a fruitful cause of those thick black fogs with which town-dwellers are so familiar.
On examining, after I had reached America, those earthy and friable masses, I found crystals of sulphate of alumine.
Near it is a shallow reservoir of stone and lime, about five yards by ten, proved by the aqueduct, part of which still remains, to be a tank of supply. Removing the upper slabs, we found the interior lined with a deposit of sulphate of lime and choked with fine drift sand; the breadth is about fifteen inches and the depth nine.
From being almost colorless, the crystals turned instantly to a deep blue, then rapidly to purple, lilac, red, and then the red slowly faded away and they became colorless again. "What is it?" I asked, fascinated. "Lead?" "N-no," he replied, the lines of his forehead deepening. "No. This is sulphate of strychnine." "Sulphate of strychnine?" I repeated in astonishment. "Yes," he reiterated slowly.
Nausea, vomiting, hurried respiration, marked cyanosis, syncope. Persistent sneezing and widespread urticaria may be present; collapse. =Aniline= is an oily liquid, heavier than, and not soluble in, water. It is colourless or reddish-brown; it has a peculiar tar-like odour; it is soluble in alcohol, and forms a soluble sulphate with sulphuric acid.
The reduction may be accelerated by the addition of some ammonium sulphate. The antimony separates out as a fine, light gray precipitate on the electrode, and which adheres very firmly, provided the precipitation has not been carried on too rapidly, i. e., if the current employed for the reduction was not too strong.
A further inspection of the dissected compounds above shows that six molecules of FeO.SO were required to react with the three atoms of oxygen from the bichromate. From the two equations Since the ferrous sulphate crystalline form has the formula FeSO .7H O, a normal reducing solution of this crystalline salt should contain 277.9 grams per liter. !Approximate Strength 0.1 N!
The mine consists of a hard stratum, between two and three feet thick, of the nitrate mingled with a little of the sulphate of soda and a good deal of common salt.
He would be very likely to die of exhaustion, to endure an amount of agony which would permanently enfeeble his mind, or to commit suicide as his only way of escape from it, if we cut him short from the equivalent of 15 or 20 grains of sulphate of morphia after having used the drug for five years.
If a second edition was called for, the type had to be set again. Now, however, books are generally printed not from type, but from a copper model of the type. To make this, an impression of the page of type is made in wax and covered with graphite, which will conduct electricity. These moulds are hung in a bath of copper sulphate, where there are also large plates of copper.
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