Supplement to the American dispensatory / by John King and John U. LLoyd.

  • John King
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: Supplement to the American dispensatory / by John King and John U. LLoyd. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    Ferri Bromidum. 98 pulse; increased temperature; diminution of vascnlar tension ; gastric irritability, and, not unfrequently, diarrhea, accelerated respiration, the peculiar odor of the oil being exhaled with the breath ; and increase of the urinary excretion. Its chief eliminatory organs appear to be the lungs and kidne3^s, causing an increased elimination of urea. The dose of the oil is from two to five drops, and it is more convenient to administer it in capsules. One part of the oil combined with one hundred parts of cod-liver oil has proved serviceable in phthisis; it removes the offensive taste and odor of the fish oil. The most agreeable and convenient form of administration is the tincture, in doses often to twenty drops; or, the fluid extract, in doses of six to ten drops, in syrup. The leaves made up into cigars or cigar- ettes, and smoked, have been advised, to afford relief in bronchial catarrh, asthma, and other affections of the respiratory organs; the question has been asked, may not the small amount of benefit that might be de- rived from the minute proportion of oil remaining intact, be more than overcome, and even prove injurious, from the irritating action of the smoke and of the erapyreumatic products ?—K. FEEEI BEOMIDUM. Bromide of Iron. Formula, FeBrj; molecular weight, 215.40. Description.—Bromine combines directly with iron, to form bromide of iron, represented by the above formula and molecular weight. When the two elements are placed together, the chemical reaction is violent, with evolution of heat, and large amounts of bromine are lost by evap- oration. For this reason, precautions must be taken to control the re- action. Theoretically, fifty-six parts of iron are sufficient for one hun- dred and sixty parts of bromine; yet, in practice, it is advisable to use a larger proportion of the former. The following process is practical, and we recommend it to those who desire to prepare bromide of iron in a small way; with a few modifications, it maybe adapted to the preparation of solution of bromide of iron in quantities sufficient for the manufacture of bromide of potassium : Into a chemical flask introduce two fluidounces of distilled water and one troy ounce of clean coarse iron turnings, or iron wire, and sur- round the flask with ice and water; now add half an ounce (troy) of bromine, and agitate occasionally, until the solution has almost lost its red color; to the solution, when cold, again add a like amount of bro- mine, and, when the reaction is finished, add another half ounce (troy) of bromine, and so continue successively until a total of two troy ounces of bromine has been used; after each addition, permit the reac- tion to cease, and the liquid to cool. Now warm the flask, and, when the solution has acquired a greenish color filter over; wash the excess of iron and the liberated carbon [the carbon is from the iron] with a little distilled water, and filter into the former solution. Transfer this solu- tion at once into a clean iron dish, placed upon a sand bath, and quickly evaporate, until a portion, removed upon a glass rod, will solidify upon cooling; then remove the dry salt, immediately, into well-stoppered bottles. History.—When bromine is added to iron, surrounded b}^ ice-water, combination ensues without material loss of bromine, unless the pro-
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