1906.] 



Nitrification of Sewage. 



73 





•IS -ma 



105-2 

 Nil 



10 ! 6 

 0-083 

 0-061 

 0-388 

 0-128 



O Oi CO rH rH 



O T* Tfl O O O 



O HHOOH 





'H '09a 



CO 00 OO 

 iC iO -^ 50 



lOO^>-jJ<pprHTJ<rH 



locqnoffioooo 



O 



0-136 



1-33 



2-38 

 Nil 



o-ooo 



7-5 





•2 ^a 



SDS0 50 O 



_ rH 00 lOCq 



rH£ . .OOO^fH 



O^ " ~Oi OO O O 



0-108 



1-72 

 1-67 

 Nil 





•21 - AO^[ 



113-7 



Nil 



8 ! 8 

 0-240 

 0-069 

 0-312 



o-ioo 



0-028 



1-00 

 2-63 

 Nil 



15 ! 6 





•01 "AO^[ 



ooooci o 

 _, cq tt< iQ o 



o~ . .WOOWH 



t-^ " ~oj o o o o 



Oi 



o-ioo 



1-92 

 1-82 



Nil 



2' 



o 

 o 



•Z -aok 



OOiOOOO 

 05—h - .SOONO 



cq " oo o o o o 



Oi 



0-068 



1-67 

 2-00 

 Nil 



Over 2' 



o 



o" 

 o 



rH 



'98 '^0 



104-3 

 Nil 



10 ! 2 



0-048 

 0-033 

 0-336 

 0-096 



0-080 



1-43 

 2-31 



0-007 



0-007 



Over 2' 



CD 

 so 



"61 'V>0 



!OSB» 



H<THcqcqpppcqp 



i— 1000 010000 



o 



0-064 



1-61 

 2-22 



Nil 



Over 2' 



c3 



"81 '^O 



92-3 

 Nil 



9 ! 8 

 0-006 

 0-053 

 -308 

 0-096 



0-040 



2-04 

 2-86 

 Nil 



19 ! 



o 

 o 



=+H 



o 



"6 -^0 



Cq Oi 00 O 



,_ CM CO O -* 



0£ •• -O O OOO O 



^^ ""ooooo 



Oi rH 



0-056 



1-25 

 3-30 

 Nil 



Over 2' 



•\z "^S 



9-6 



0-003 



0-041 



0-308 



0-056 



0-056 



2-12 

 2-00 

 0-005 

 Nil 

 Over 2' 



O 



o 



•Ql -^dag 



OCOCOOi 

 lOOOO Op O CO p 



COOOOOiOOOO 

 Oi 



1-69 

 1-43 



Nil 



Over 2' 



1— 1 



CD 



S3 



<D 



•rH 



•2 '^3S 



OiNOO 

 O CO 00 00 



COOOOOiOOOO 



rH 



rH 



2-12 

 1-43 

 0-005 

 Nil 

 Over 2' 



•18 -3nv 



t- t- 00 00 



HlO'XlO 



t- | ; 1 ^OONh 

 CO ooo o o o 



Ci 



1-55 

 1-54 

 Nil 



0-009 

 16-0 



'OS A«f 



11-0 

 0-012 

 0-035 

 0-276 



o-ioo 



Oi tr- 

 io OC O O 



1 t-OOOO 



HNOON 

 CO 



•si A^r 



9-6 

 0-021 

 0-038 

 0-336 



00 rH rH 



1 ooop 



0)00^ 





1905. 



1 



P 



c 



"if 



P 



•c 



1 



c 



% 



a. 



„_c 

 "2 

 c 



c 



I 



03 

 <L 

 £ 



Albuminoid ammonia 



Oxygen absorbed in 4 hours at 80° F. ... 

 Oxygen absorbed in 3 mins. before 



incubation at 80° F. 

 Oxygen absorbed in 3 mins. after 



incubation (3 days) at 80° F. 

 Nitric nitrogen on day of collection ... 



,, ,, day after collection 



Nitrous nitrogen on day of collection ... 



,, ,, day after collection ... 



Column necessary to obscure test 



lines (inches) 



o 

 o 

 o 



CD 



o 



rH 

 CD 



ft 



co 



-1-3 

 fH 



c3 



H 



CD 



r-Q 

 +3 



CD 

 CD 



CD 



P=H 



•IS 'Odd 



•f i -03(1 



•2 '03a 



•21 -AOtf 



'OI "AOJ^ 



'Z -A0£ 



"9S •*>() 



"61 -P0 



"81 "V>0 



OiOOOO 



k* 



b-MOO 



on«im 

 hob^ooowh 



-# rH O O Oi O O O O O rH 



00 t- — 



'pp. 



Oi O O oo 



<MCO~- 

 Oi^ty* -O 



■HrH^ ";. 



iocqo 



rHCO 1 ^ t> 



O 



,fc - ' 



cooono 

 Oi o o o o 





(M lO "X> 00 



rH CM rH CD 



o o cq o 



oo o o o o 



oocqrn . 

 ?=9£ ;& 



O 



o o o o o 



H«q^ 



rH^ " " 



COOiCO CO 



OHHN 



p p p cq p 

 Oi o o o o 



|H l— lO 



■HCq^ 



«fe - 



Oi -# o o 



O CO 00 00 



»oo o p cq p 

 OiO o o o 



cocq^ 1 



6-^oq ?=g : - 



MOONO 



o o o o o 



cq 



OiO- . 



— * C^ 



'IS 'Vfeg I I g S =; 



p p cq p 



o o o o 





•51 "^ag 



•2 -^S 



'18 'Sny 



•OS A^f 



•81 Anf 



1(5 if •* » 



Hoqmio 



.itOONO 



(TO t-rH— , . 



riHO o 



,» - - 



Oi O O O O 



CO 00 O O 

 rH CO 00 00 



: p o peq p 

 oo o o o o 



oqiNHCq 

 t-«ooo 



rH oq o o co 



-O O O CO rH 



I I 



HH IfJ -S 

 Cq Tj< rH 



I MOO-* 



cq oo t- 



I t~ p p p 



« ^ el fa 



FJrO 



-O +J 



Infill 



S*o 0rc el S 



CO 00 



33 : s- 



•S ^2 ■" .« 



d <v <v h 



5 bCcjCo 



<!00 



o ™ § 



ea S 2 -fi el o 



1^2 I as 



ssj =1 =11 



O r?i r?< O 



