See Pocket Formulary. Other methods of obtaining it are the following:

To the mother liquor of kelp (after the crystallizable salts have been separated) add sulphuric acid to render the liquor sour. Introduce the acid liquor into a leaden still, heat to 140° F., add binoxide of . manganese, and lute on with pipe-clay a leaden head, fitted to a series of spherical glass condensers, each having two mouths opposite each other, and inserted the one into the other. A stopper in the head of the still allows the contents to be occasionally inspected, and additions of acid or oxide made, if necessary. See Wagner's 'Chemical Technology ' for a drawing of the apparatus. Soubeiran proposes to add sulphate of copper to the ley, which precipitates half the iodine. He then decants the clear liquor, and adds more sulphate of copper with some iron filings. An iodide of copper is formed, which is separated from the iron filings and suspended in the liquor by agitation, collected on a filter, and heated with oxide of manganese and sulphuric acid. Glasgow is the principal seat of the Iodine manufacture.