DISINFECTION AND STERILIZATION. 177 



ants throwing garbage down air-shafts it is sometimes 

 advisable to put wire netting outside of windows open- 

 ing on shafts. Concrete or asphalt bottoms of shafts 

 should be cleaned and washed with the bichloride solu- 

 tion or sprinkled with chloride of lime. 



7. Hydrant Sinks, Garbage Receptacles, and Garbage 

 and Oyster-shell Shutes and Receptacles should be 

 cleaned daily and sprinkled with dry chloride of lime. 



8. Refrigerators and the Surfaces Around and Beneath 

 Them, Dumb-waiters, etc., may be cleaned by scrubbing 

 them with the hot soapsuds solution. 



9. Traps. All traps should be flushed daily with an 

 abundance of water. If at any time they become foul 

 they may be cleaned by pouring considerable quantities 

 of the hot strong soda solution into them, followed by 

 the carbolic solution. 



10. Urinals and the Floors Around and Underneath 

 them should be cleaned twice daily with the hot soap- 

 suds solution, and in addition to this, if offensive, they 

 may be disinfected with the carbolic solution. 



11. Stable Floors and Manure Vaults. Stable floors 

 should be kept clean and occasionally washed with the 

 hot soapsuds or the hot strong soda solution. Pow- 

 dered fresh chloride of lime or formalin may be used 

 in manure vaults. 



12. Vacant Rooms should be frequently aired. 



13. The Woodwork in School-houses should be scrubbed 

 weekly with hot soapsuds. This refers to floors, doors, 

 door-handles, and all woodwork touched by the scholars 7 

 hands. 



14. Spittoons in all Public Places should be emptied 

 daily and washed with the hot soapsuds solution, after 

 which a small quantity of the carbolic solution or milk 



12 



