DISINFECTANTS. ANTISEPTICS 189 



9. Steam in apparatuses which have been examined by experts when 

 erected and at regular intervals afterward and found satisfactory. 



In addition, steam from a steam boiler may be employed for small vessels 

 with one opening, like milk cans, provided the steam is used under pressure 

 and is introduced directly into the vessel. The interior of the vessel is first 

 exposed to the live steam and then the hoops, bands and extemaj wall, the 

 latter especially in wood vessels. 



10. Boiling in water or in 3 per cent, soda or soap solution (see § 5, No. 8). 

 The fluid must be put on the fire cold, the objects completely immersed and 

 the boiling continued for at least a quarter hour. The vessel must be covered. 



Milk buckets, milk cans and other milk vessels, instead of being sub- 

 jected to the boiling process described, may be treated in the following manner : 



(a) The vessel is laid in boiling-hot water or in boiling-hot soda solution 



or dilute Tnillf of lime for at least 2 minutes, all parts of the vessel 

 being coverfed by the fluid. 



(b) The external and internal surface of the vessels, the handles and 



covers are scrubbed with boiling-hot water or boiling-hot soda 

 solution. 



11. Thorough singeing and heating with fire or a suitable flame 



12. Burning. 



(Subdivision 2.) The disinfectants described in Nos. 4 to 7 are to be used 

 as hot as possible. 



(Subdivision 3.) According to further regulations of the government, 

 other disinfectants and methods, which have been tested in regard to their 

 effectiveness and practical application, may be employed in addition to those 

 mentioned above. 



2. Choice of Disinfectant and Method of Application. 



§ 12. The choice of the disinfectant (§ 11) and the method of application 

 will depend in general upon the resistance of the infectious agent, the facility 

 with which it is carried by intermediate bodies and the special conditions 

 existing in each case. 



§ 13. In epizootics, the infectious agent of which is easily destroyed and 

 which is spread by the diseased animals, it will be sufficient to clean and then 

 whitewash with dilute milk of lime or calcium chloride solution the ceiling, 

 walls, posts, pillars, stalls, doors, floors, gutters and equipment. Iron parts 

 are to be wiped with dilute oresol water or carboUc acid solution. Wood and 

 stone and glazed tiles are to be treated in the same manner. 



§ 14. (Subdivision 1.) In epizootics of which the infectious agent is 

 difficult to destroy, or when there is great danger that the disease may be 

 further spread by intermediate objects, the following process is to be foUowed: 



1. The bedding, manure, other dirt, feed residue, etc., removed in clean- 



