22 
The following are a few samples of ditferent waters in 
which the iron has been determined as described above : 
Parts per 1 ^000,000. 
1 
Amount 
1 i 
Date, 
Name of Water. 
used in 
By new By 
As found by other Observers. 
! 1874. 
Analysis 
method KM 11 O 4 
i Feb. 14 
Manchest. Water Supply 
5 litres 
•21 
1 
•287, R. A. Smith, 1864. 
i IMar. 2( 
1 » • 
•18 t 
2 
•175 ( 
1 July 15 
1 „ 
•10^ 
1 
1 ,, 
•11) 
1 Aug. 31 
1 „ 
•27 
i 
1 Sept. 1 
>5 35 
1 „ 
•18 
' » 2 
53 
: 1 » 
•26) 
1 
j 
1 
1 „ 
•27 ) 
! Sept. 3 
33 53 
i y> 
•30 i 
— 
5 3 3 3 
1 n 
•32 ) 
Sept. 4 
5 3 3 3 
•38) 
1 
— 
33 3 1 
1 „ 
•30)' 
1 
Sept. 5 
3 3 33 
i }> 
•42) 
1 
— 
Medicinal Spring Tre- ) 
friew, North Wales ) 
1 „ 
•41 ; 
1 
Feb. 19 
30. cc 
1600-00 
1575-50* 
Feb. — 
Chloride of Iron Spa, \ 
Harrop'ate ) 
50. cc 
290-00 
290-34 
289-40 H. Davies, Feb., 1872. 
Feb. 16 
R. Irwell nr. Pomona ) 
Gardens | | 
1 litre 
•86, 
Feb. 18 
R. Mersey, Northenden 
U „ 
•48 
Feb. 23 
R.Dane, above Cong’ton 
1 „ 
•57 

,, below ,, 
•44 
— 
Li verpl. Waterworks, 
Compensa. Water, V 
White Cop’ceHeapy ) 
2 „ 
•42 
1 
i 
Jan. 3 
Barnsley AVater Supply 
2^ „ 
•25' 
Feb. — 
R. Thames, Lon. Bridge 
1 M 
•19i 
Jan. 3 
Cockerhm W ell, Barnsl’y 
2 „ 
•075’ 
Feb. — 
New River Company .. 
1 „ 
•050' 
Trace ) Graham, 
12-l(Al203&Fe203) [-Miller and 
— 
Lambeth „ 
1 
•044 

East London ,, 
1 5, 
•038' 
6 8( ,, ,, )) Hofmann. 
Jan. S 
Friars’ AVell, Barnsley . . 
1 3 
■*^4 33 
•005! 
i 
* The author hopes shortly to bring an analysis of this water before the 
Society. 
Errata. 
In the last number of the Proceedings, page 6, line 8, for 
“ Odontogigram ” read Odontogram. 
Line 17, for indentification ” read identification. 
