Clarification of the Public Water Supply of Cincinnati. 29 



Series 13 substantially repeats series 12. 

 Series 14. Hydrant Water. January 24, 1885. 

 Precipitant Ferric Sub-sulphate Solution. Sp. G. i.- 

 I Drop=.o53G. 



Series 15. Hydrant Water. January 24, 1885. 

 Precipitant Ferric Sulphate Solution. Sp. G. 1.3 

 I Drop=o.o4o G. 



Series 16. Hydrant Water. January 24, 1885. 

 Precipitant Ferric Chloride Solution. Sp. G. 1.3 10 

 I Dro])=o.o45 G. 



