ALTERATIVES. 71 



Preparations of Iodine. — lodum, iodine (in 

 bolus, but rarely given in this form). Dose: H. and 

 C, gr. x.-xxx. ; D., gr. ij.-vi. 



Liquor lodi Compositus, compound solution of 

 iodine, Lugol's solution (always well diluted) . Dose : 

 H. and C, lid 3 ss-iv. ; D., tt], i.-x. (Composed of 

 iodine 5, potassium iodide 10, water 85.) 



Tinctura lodi, tincture of iodine, eight per cent. 

 Dose: H. and C, fl. 3i.-iv. ; D., Til, i.-v. 



Unguentum lodi, iodine ointment. Used locally 

 only. (Composed of iodine 4, potassium iodide 1, 

 water 2, lard 93.) 



Ferri lodidum and Syrupus Ferri lodidi. — See 

 under Ferrum. 



Potassii lodidum, iodide of potassium, color- 

 less, translucent, cubical crystals, slightly deliques- 

 cent, having a peculiar, faint odor, a pungent, saline, 

 afterward somewhat bitter taste, and a neutral reac- 

 tion; soluble in 0.8 part of water and in 18 parts of 

 alcohol. 



Sodii lodidum, iodide of sodium, minute white or 

 colorless, monoclinic crystals, or a crystalline pow- 

 der, deliquescent on exposure to air, odorless, having 

 a saline and slightly bitter taste and a -neutral or 

 faintly alkaline reaction. Soluble in 0.6 part water 

 and in 1.8 parts alcohol. 



Ammonii lodidum, iodide of ammonium, a white 

 granular salt or minute crystalline cubes, very deli- 

 quescent, and soon becoming discolored on expo- 

 sure to air; odorless when white, but emitting a 

 slight odor of iodine when colored, having a sharp 



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