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Updated: June 7, 2025
Collodion, which is a solution of gun-cotton in alcohol and ether, mingled with a solution of iodide and bromide of potassium, is used to form a thin coating over the glass. Before the plate is dry, it is dipped into a solution of nitrate of silver, where it remains from one to three or four minutes.
They have been put in a temporary state of suspended animation. Any doctor can readily revive them by the injection of seven c.c. of decinormal potassium iodide solution for every 100 pounds of weight. Do NOT use higher concentrations. Lower concentrations will act more slowly. You will find that any tendency toward leprosy or cancer will have been destroyed.
During the later period of the disease iodide of potassium, iron and bitter tonics should be given. BROKEN-WIND, HEAVES. The terms broken-wind and heaves are used in a way to include a number of different diseases of the respiratory organs of the horse. The term heaves is applied almost wholly to an emphysematous condition of the lungs.
Let any physician who reads these lines pause and reflect how many times in his life he has seen lasting or serious evil results from drugs. Accidents happen, but they are the offspring of carelessness. Sometimes, also, unexpected and temporary extreme results surprise us, as when an opiate purges, or five grains of an iodide prove to be gravely poisonous.
I account for this by noticing that, at a higher temperature, the plate throws off any larger crystals that might otherwise be deposited, receiving only the finer, thus producing a more perfect chemical combination of iodide of silver. I would call the attention of the operator to this point, as presenting something of interest, and which may direct in a way of accelerating the future operations.
To test this, the author made the following experiments: Bladder was tied over the necks of three wide-mouthed vials, with bottoms cut off, and each was filled with iodide of potassium ointment. No. 1 contained an ointment made with lard. No. 3, one made with unguentum paraffini mixed with 3 per cent. of lard. All three vials were then suspended in beakers filled with water.
From the data obtained, calculate the relation of the thiosulphate solution to a normal solution, and subsequently calculate the similar value for the iodine solution. It is necessary to determine the amount of thiosulphate which reacts with the iodine thus liberated by making a "blank test" with the iodide and acid alone.
The resulting preparation is washed with alcohol; it is crystalline and of a hyacinth color. Iodide of Silver. This compound is formed upon every plate upon which a Daguerreotype is produced. The vapor of iodine coming in contact with the silver surface, forms an iodide which is peculiarly sensitive to light.
This is especially indicated at the very beginning of the disorder. Small animals should be given a good bed. A very light, easily digested ration should be fed. An occasional physic should be administered. Strychnine and iodide of potassium may be given. Cold applications to the back are indicated. What organs comprise the central portion of the nervous system? Peripheral portion?
Taking up the volatile alkaloids, we find with regard to conine, first, that the action of methyl iodide shows it to be a secondary amine, that is, it restrains only one replaceable hydrogen atom of the original ammonia molecule. Its formula is therefore C H NH. From conine can be prepared methyl-conine, which also occurs in nature, and dimethyl-conine.
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