CONTAGIOUS AND EPIZOOTIC DISEASES. 5 



Burning is an effectual mode of disinfecting organic matter, 

 old rotten wood-work, clothing, fodder, manure, etc. It may 

 even be used on the air by moving an open charcoal-stove 

 from place to place over the entire infected building. It may 

 be equally used over the openings of drains, or as a lamp in 

 the ventilating outlets of infected buildings. 



Chlorine, set free from common salt, by adding oil of vitriol 

 and a little black oxide of manganese, is an excellent disin- 

 fectant of the air, but can only be used in vacated buildings, 

 and is most effectual in a full light. 



Euchlorine, a compound of chlorine and oxygen, may be 

 obtained by adding, at frequent intervals, a little chlorate of 

 potassa to a glass of strong muriatic acid. It may be used in 

 occupied buildings. 



SidpJiurous acid is another excellent disinfectant for the air, 

 and can easily be produced in, any amount by burning flowers 

 of sulphur on a slip of paper laid on an iron shovel. Like 

 chlorine, it is most efticient in daylight. In occupied buildmgs 

 it may be burned carefully pinch by pinch without incon- 

 veniencing the stock. 



Carbolic acid may also be used in occupied buildings, being 

 allowed to evaporate from shallow basins, alone or mixed with 

 ether or alcohol, from saturated rugs hung up at intervals, or 

 from cloth-lined ventilating inlets, kept saturated with the acid, 

 or, finally, it may be diffused through the air of a building by 

 an atomizer. Carbolic and cresylic acids may also be used for 

 disinfecting solids and licjuids, being poured into drains or 

 sprinkled on the floors, walls, and other parts of the building. 

 For the latter purpose, the strong acid may be diluted with 

 one hundred times its weight ot water. The cheap impure 

 acid is usually preferred for dung-heaps, yards, and other outside 

 purposes, but is disagreeable j^doors. Coal-tar and ivood-tar, 

 from their contained carbolic acid and allied products, are also 

 good fur out-uoor uses 



