The Air of Sewers. 



507 



c5 

 B 



No. of 

 micro- 

 organisms 

 per litre. 



1 



: 



o 



CO 



CO 



OS 



to 



16-5 



dde air at ti: 



Vols, 

 oxygen to 

 oxidise the 

 organic 

 matter in 

 1,000,000 

 vols, of ail*. 



OS 



. 



CM 

 CO 



(M 



"? 

 rH 



00 

 J> 



rH 



88 of outi 



Vols, 

 wbonic 

 cid per 

 ,000 vols, 

 of air. 



00 

 CO 



: 



CO 

 CO 



K5 



CO 

 CO 



i-l 



ID 

 i— ( 



OS 

 00 



<y 

 o 



o « O 



































a 



Hi 



Temp. F. 



o 



cq 





cs 



rH 



00 

 H 





16-8 





° £ -2 -s 

 o ^ 



00 S „-> C Si ° sj_, 



*3»S§» cT o 



O K S i-T 9 



ri 



©"c3 



• o 2 « ° 



0Q P-iO • 

 hi. 2 P 



O 03 



HH 



oq cs 



rH OS 



N iH 

 CO O 



00 



00 t_ CD 

 H O* 

 ^= r 3 rH 



00 a> i— r 







