(3) _Muscular Tissue._--Fatty degeneration in the heart and other organs of the body has been noticed in several cases. (4) _Liver._--Fatty degeneration of the gland. (5) Blood entirely disorganised, the cells transparent, and their contents dissolved in the uncoagulated liquor sanguinis. The colour, cherry-red. 5. _Name_ special affection produced by phosphorus in lucifer match makers--Necrosis of the jaws, usually of the lower jaw. The disease begins in a decayed tooth. 6. _Name_ a natural disease which phosphorous poisoning has been supposed to resemble--Acute yellow atrophy of the liver. IODINE Iodine is seldom used as a poison, owing to the difficulty experienced in disguising its colour. In the form of a strong solution it has been, however, employed for throwing on the person with intent to cause grievous bodily harm, as in this form it is corrosive, and destroys the part which it touches. _General Characters._--Iodine is a dark grey solid, with a bright metallic lustre. It melts at 107° F., boils at 175° F., and gives off at the ordinary temperature a faint odour not unlike chlorine. But slightly soluble in pure water, it is, however, readily dissolved when a soluble iodide is added to the water. _Symptoms._--Those produced by irritant poisons generally; the severity of the symptoms being increased by the strength of the solution, iodine possessing corrosive as well as irritant properties. The vomited matter will be stained with the iodine, and starchy material turned blue or black. _Post-mortem Appearances._--Those the result of acute irritant poisoning. _Fatal Period._--Two days. _Fatal Dose._--One fluid drachm of the tincture has proved fatal; recovery has taken place after taking one fluid ounce of the tincture. _Treatment._--The stomach should be emptied by the aid of the stomach pump, and then diluent drinks--arrowroot and barley water--may be given. _Chemical Analysis._--Add bisulphide of carbon to the suspected mixture, and shake them together. The sulphide will dissolve out the iodine, which may be obtained on evaporation and sublimed. The characteristic reaction of iodine, the development of a blue colour on the addition of a small quantity of starch, will be conclusive evidence of its presence. If chloroform be added to iodine in aqueous solution and shaken up, the chloroform is coloured crimson by the iodine, and falls to the bottom as the mixture is allowed to settle. IODIDE OF POTASSIUM This salt is largely used in medicine; and though poisonous effects may be produced, due probably to some constitutional idiosyncrasy, it has seldom been used as a poison. It must, however, be placed among noxious irritant substances. _General Characters._--Iodide of potassium--hydriodate of potash--occurs in cubical crystals of a white or faint yellow colour, very slightly deliquescent when pure, and with a feeble odour of iodine.