200

IODU

deafness. It is given in form of tincture or pill internally, andapplied in form of ointment externally. See Hydriodate ofPotass.

Injurious Effects of Iodine. Dr. Gairdner finds that a continuedcourse of iodine produces great emaciation, depression of spirits,tremor, and dangerous cholera. Others have not been so unfor-tunate. It is said to diminish the mammae in women when longcontinued, and this is confirmed by Mr. Callaway, of Guy's Hospital,and Dr. Ryan.

Enters into Tinct. Iodinii. D. Ung. Iodinii. D.Iodous Acid is procured by triturating, in a glass or porcelain mortar,equal parts of iodine and chlorate of potass, and heatiirg the mixturein a glass retort, when the iodous acid rises in vapour, and isconcentrated in the form of a yellow liquid, of an oily consistence.Ioduret of Lead. Is given internally in doses of gr. J- to gr. ss ormore, and is also used externally in form of ointment. (Cuttereau.)

Medicinally, one of the best preparations of iodine, as it does notirritate the skin like most of the others.Ioduret of Mercury. New. Dissolve in 400 parts of water 100of the nitrate of the protoxide of mercury, filter, and add hydri-odate of potass in solution, till no precipitate falls down; throwthe yellowish precipitate thus procured upon a filter, and wash itwith distilled water, till the washings give no longer a black preci-pitate by potass; dry what remains on the filter, and keep it closelystopped and from light. It contains 2'5 mercury, and 1-56 iodine.Dose from gr. j to gr. iij.

Or, dissolve without heat q. s. of mercury in one part of nitric acidwith three parts distilled water to form a pure proto-nitrate ofmercury ; add hydriodate of potass till precipitation ceases; filter,and wash the residue with distilled water, which will be a yellowpowder insoluble in water. (Dr. O'Shaughnessy.)

The Deutioduret, prepared with 70 parts of corrosive sublimate, and100 parts of the ioduret of potassium, contains 2-5 of mercury, and3-12 of iodine.

Ointments of both those iodurets of mercury are prepared with gr. xv tothe ounce of lard, and applied in small quantity upon lint, for dress-ing venereal ulcers.

Tinctures are also made with them, in the proportion of gr. xv tothe ounce of alcohol. Dose "lqx to ii[xx in a glass of distilled watertwice a day, in strumous syphilis. The iodurets are also combinedwith ether.

Pills are also made with extract of juniper and liquorice root, and theiodurets.