Memoirs of the National Academy of Sciences. Vol. VII. 



ROXBOROUGH district. upper schuyuill. 



2 1 ST AND MORE THAN HALF OF 22nD AND 28tH WARDS. 



Rain fall 



INCHES 



NOVEAIBER 



6.640 



DECEMBER 



i.srs 



JANUARY 



2.380 



FEBRUARY 



5.530 



HARCH 



2.900 



APRIL 



4.105 



HAY 



5.360 



JUNE 



3.750 



.IIJLY 



2.470 



Typhoid Fever 



30000 



BACTERIA 



In One 

 Cubic- 

 Centimeter 



6000 



2000 



11 Cases 



20 



30 



44 



57 



58 



31 



20 



iztc 



±1^ 



^-i-r 



hn=Z 



22 



Parts rer 



Nitrogen 



as 



Nitrates 



too Thousand 

 0.10 

 O.OS 

 0.04 



free 

 Ammonia 



0.005 

 0.002 



0.012 



Albuminoid 0.006 

 Ammonia 



OXYGEN 

 Consumed 



Oilorine 



0.18 

 0.12 

 0.06 



0.4 

 0.2 



m 



H 



H 



a 



SB 



■ ■ Q o 



■ ■ ■ 



n 



n 



^ 



i~t*i 



in I 



I ■ ■ 



dbb 



ht 



I ■ n - 



J Ll 



m 



il 



HI 



J-1-H 



d 



^ 



i=i 



T=± 



S 



