28 



Cincinnati Society of Natural History 



Series 8. Hydrant Water. January lo, 1S85. 



Precipitant Muriatic Acid. 



I Drop=^o.o27 G. of H CI. 



Impracticable for Potable Water — water acid. 



Series 9. Hydrant Water. January 10, 1885. 

 Precipitant Aluminic Sulphate, (AI23SO4I8H2O). 

 I Drop=o.oio G. of the Crystalline Salt. 



Series 10. Hydrant Water. January 10, 1885. 

 Precipitant Magnesian Lime, )^c.c.=o. i G. Mg O. Ca O. 

 Impracticable. All the samples have a lime taste. 



Series 11. Substantially Series 10, repeated. 



Series 12. Hydrant Water. January 17, 1885. 

 Precipitant Ferric Chloride Sol. Specific Gravity 1.74 

 I Drop=o.o3o G. of Solution. 



