Chemical Composition of the Thames Water. 



117 



with the subsequent determinations of the more important con- 

 stituents, with the dates when the samples were collected : — 



Table I. — Analysis of Thames Water at Kingston, 1855-56. 

 (Direct experimental results.) 



Date of collection. 



May 26, 

 1855. 



Sept. 8, 

 1855. 



Oct. 8, 

 1855. 



Nov. 3, 

 1855. 



Dec. 29, 

 1855. 



Temperature of the water... 



Total residue (including sus- 

 pended matter) 



Suspended matter (clay and 

 sand) 



Organic matter (in solution) 



Total dissolved salts 



Chlorine 



Sulphuric acid 



Lime 



Magnesia 



62° F. 



24-45 

 3-603 



60° F. 57* F. 42° F. 



Grains in the gallon. 



631 

 217 

 008 

 651 

 240 

 462 



Hardness before boiling 

 Hardness after boiling . 

 Loss by boiling , 



42° F. 



24-35 



3-82 



0-94 

 19-59 

 1-287 

 3-87 

 7-73 



if-S 



8-5 

 3-0 



Jan. 15, 

 1856. 



Feb. 27, 

 1856. 



March 25, 

 1856. 



April 29, 

 1856. 



May 10, 

 1856. 



Temperature of the water. . 



Total residue (including sus 

 pended matter) 



Suspended matter (clay and 

 sand) 



Organic matter (in solution) 



Total dissolved salts 



Chlorine 



Sulphuric acid 



Lime 



Magnesia 



46° F. 



26-58 



. 1-179 



1-56 



23-841 



1-017 



2-572 



43° F. 



44° F. 



50° F. 



Grains in the gallon. 



Hardness before boiling 

 Hardness after boiling . , 

 Loss by boiling 



13-2 



5r-25 F, 



19-67 



1179 

 0-627 

 17-864 

 0-702 

 1-732 

 7-493 



12-3 



N.B. The samples were collected in every case at 9 o'clock a.m. 



From which the following average composition may be de- 

 duced ; — 



