252 



DR. C. A. BURGHARDT ON THE POLLUTION OF 



residue dried at ioo° C, obtained on evaporating the 

 filtered water^ to be '' total matter in solution," but I was 

 o£ course aware tbat much loss arose by the decomposition 



Fig. I. 



MANCHESTER 



SU/l^^'ONANDPENDLEBURY 



LITTLE LEVER 

 RADCLIFFE 



tWHITEFlELD 



RAMSBOTTOM 



HASLINCDEN 



RAWTENSTALL 



of the sewage matter in the water into carbon dioxide at 

 about 100° C. The oxygen tests were applied directly the 

 water arrived in my laboratory ; also the ammonia deter- 



