IODINE 311 



tion of ether, weak ammonia, or the vapour of warm water 

 or of alcohol. 



MEDICINAL USES. Diluted chlorine gas has been used 

 as an inhalation, or the freshly-prepared solution applied in 

 spray, to increase bronchial secretion, to stimulate and 

 disinfect ulcerated sore-throat in horses, and abate the dis- 

 charge and fee tor from disease of the facial sinuses. 

 Both gas and solution are used for the destruction of 

 strongyli infesting the air-passages of calves and lambs, 

 and the liquor chlori, and the equally effectual but less 

 irritant sulphurous acid solution, are also employed 

 intratracheally. As a mouth wash for dogs with foul 

 condition of the gums and teeth, the mixture of chlorine 

 and its oxides obtained by the action of strong hydrochloric 

 acid on potassium chlorate with subsequent dilution in 

 water, is very useful. 



For disinfecting or deodorising, the materials for evolving 

 chlorine should be placed in earthenware vessels in the 

 upper parts of the boxes or sheds in order to facilitate 

 diffusion of the heavy vapour. One part each of common 

 salt and manganese black oxide, intimately mixed, are 

 treated with two measures of oil of vitriol, diluted with 

 two measures of water. For more gradual production of 

 the gas, bleaching powder is mixed with potash alum. 

 Where chlorine is used for thorough disinfection, the build- 

 ings must be cleared of animals ; large volumes of gas 

 liberated ; sunlight admitted to intensify the action ; and the 

 walls and woodwork washed with a strong watery solution. 

 It may be fittingly used in conjunction with the tar acids, 

 but is incompatible with sulphurous acid. 



IODINE 



IODUM. A solid non-metallic element, obtained from the 

 ashes of seaweeds, and from native iodides and iodates. 

 (B.P.) 



Iodine is present in sea-water, and is thence taken up 

 by sea plants and animals. It is prepared from kelp, and 



