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Now while these proportions may be the best for the development of a negative, they are not, according to my experience, the best for gelatine bromide positive enlargements; I find, indeed, that potassic oxalate should not have more than one-eighth of the ferrous sulphate solution added to it, otherwise it will not hold in proper solution for any length of time the compound salt formed when the two are mixed.
The proportions of saturated solution of oxalate to saturated solution of iron, to form the oxalate of iron developer, that has been recommended by the highest and almost only scientific authority on the subject Dr. Eder are from 4 to 6 parts of potassic oxalate to 1 part of ferrous sulphate.
"To sum up, I claim as the distinctive characters of my pile: "1. The use of the potassic or sodic alkaline liquid conjointly with chloride of silver, and the oxide of the same, that forms through the immersion of the carbon in a chloridizing bath. The use of retort or other carbon covered with the salt of silver above specified. The arrangement and construction of my pile as I have described."
Potassic bromide should be kept in the house, to use in case of necessity. SORE NIPPLES. If a lady, during the latter few months of her pregnancy, where to adopt "means to harden the nipples," sore nipples during the period of suckling would not be so prevalent as they are.
Clothes wrung out of cold water and applied to the lower and back part of the head and plenty of fresh air will usually relieve the convulsion. Be sure and loosen the clothing around the child's neck. After the convulsion is over, give the child a few doses of potassic bromide, and an injection of castor oil if the abdomen is swollen.
In Berlin it was held that German dye-stuffs should be withheld from the United States as a lever for inducing them to protest against the English blockade, and possibly have it raised. The same point of view was adopted with regard to other goods which were necessities for the United States, as, for example, potassic salt, sugar beetroot seed and other commodities.
Just inside I came upon fifteen English people of the dressed class, except two, who were evidently bricklayers: six ladies, and nine men: and at the further end, two more, men, who had their throats cut; along one wall, from end to end were provisions; and I saw a chest full of mixed potassic chlorate and black oxide of manganese, with an apparatus for heating it, and producing oxygen a foolish thing, for additional oxygen could not alter the quantity of breathed carbonic anhydride, which is a direct narcotic poison.
This salt dissolves readily in cold water; the solution is decomposed by strong potassic hydrate, baric sulphite, hyposulphites, and sulphur being formed. By a similar method of procedure the author obtained potassium pentathionate, anhydrous, and with one or two molecules of water. The author promises some further results with some other salts of the higher thionates.
Mercuropotassic White cheesy Same. iodide. precipitate. Iodized potassic An immediate A brown oil crystallizing iodide. precipitate of after a time. periodate. Mercuric chloride. Same as picric acid. Same. Tannic acid. Slight cloud. Cloud hardly visible. Platinum chloride. By A. JORISSEN.
I may also, in the last instance, mention that I have found the above methods of electro-dissolution peculiarly adapted for the preparation of unstable compounds such as stannic nitrate, potassic ferrate, ferric acetate, which are decomposed on the application of heat, and in some instances have succeeded by the following means of crystallizing the resulting compound obtained. Chem. News. Dr.
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