The Necessity of Pure Air for Health. 271 



be placed so that the air can have free access to each 

 one. If the street were placed en echelon this is readily 

 attained. 



5. No permission to build on already over-crowded 

 lots should be given. 



6. Power to condemn any notoriously unhealthy lot or 

 insanitary dwellings should be obtained. Compen- 

 sation can be made if necessary. This power must be 

 used carefully or a greater evil results. 



7. The early adoption of a proper plan of refuse re- 

 moval. And for the tropics this would appear to be the 

 " Pail System," in spite of all that has been said against 

 it. The Pails to be emptied on to the land and not into 

 the mouth of a tidal river as is done at present in 

 Georgetown. In New Amsterdam all the refuse from 

 the Institution is disposed of in this way with advantage. 



