METHOD OF DETERMINING IRON IN WATERS. 



Parts per million. 



355 



Date. 



Name of Water. 



Amount 

 used in 

 analysis. 



By new 

 method. 



By 



Mn0 4 . 



As found 

 by other 

 obser- 

 vers. 





1874. 













Feb. 14. 



Manchester Water- 

 supply. 



5 litres. 



•21 





•287 



R. A. Smith, 

 1864. 



Mar. 20. 



j> >j 



1 litre. 



•18 



} 







"„ 20. 



>j >> 



2 



•175 







July 15. 



>» >> * 



, 



•10 



} 







„ 15- 



>> >> * 



'} 



11 







Aug. 31. 



»» >) "■ 



J 



•27 









Sept. 1. 



» >) 



1 



1 



•18 









2. 



>> >> 



1 



> 



•26 



} 







2. 



>» » 



1 



J 



•27 







„ 3- 



»> >> 



1 



J 



■30 



I 







» 3- 



>> >> 



1 



> 



•32 







» 4- 



>> >> 



2 



> 



•38 



i 







„ 4- 



»> >> 



I 



, 



•36 







.. 5- 



>> >j 



1 



J 



•42 



} 







» 5- 



>> >> 



I 



J 



•41 







Feb. 19. 



Medicinal spring,, 30 c. c. 

 Trefriw, North 

 Wales. 



i6oo , oo 



1575-50* 







Feb. 



Chloride - of - iron i 50 c. c. 



290-00 



290-34 



289-40 



Hay ton Da- 





Spa, Harrogate. 











vies, Feb. 



1872. 



„ 16. 



River Irwell, near 



| litre. 



•86 











Pomona Gardens. 











„ 18. 



River Mersey, Nor- 

 thenden. 



it „ 



•48 









„ 23. 



River Dane, above 

 Congleton. 



1 „ 



•57 









„ 23. 



River Dane, below 

 Congleton. 



3 



4 11 



•44 









,, 23. 



Liverpool Water- 

 works, Compensa- 

 tion water, White 

 Coppice, Heapy. 



2 litres. 



•42 









Jan. 3. 



Barnsley Water- 

 supply. 



2 i 



'2 >> 



■25 









Feb. 



River Thames, Lon- 

 don Bridge. 



i litre. 



19 









Jan. 3. 



Cockerham Well, 

 Barnsley. 



1 



•075 









Feb. 



New-River Com- 

 pany. 



1 



•050 





Trace. 





>» 



Lambeth Company. 



1 



•044 





121 



) 



1 Graham, 

 "Miller, and 













(A1 2 3 & 













Fe 2 3 ) 



1 



East-London Com- 



1 » 



•038 





6-8 





pany. 









(A1 Q 3 & 

 Fo 3 ) 



Hofmann. 



J 



Jan. 3. 



Friar's Well, Barns- 

 ley. 



I* II 



•005 









* The author hopes shortly to bring an analysis of this water before the Society. 



