1865.] Hull on Water Supply from New Bed Sandstone. 427 



ing to the London and North-Western Bailway, by Mr. Dougall 

 Campbell, F.C.S., of London. Total solid contents per gallon 

 11 • 12 grains, consisting of : — 











Grs. per gal 



Silica 





. . 



0-80 



Oxide of Iron . 







, 



0-24 



Carbonate of Lime 







. . 



1-07 



Sulphate of Lime 







. 



1*63 



Sulphate of Magnesia 







. 



1-46 



Carbonate of Magnesia 







. 



0-70 



Chloride of Magnesium 







. , 



0-71 



Chloride of Sodium . 







. . 



1-76 



Volatilized Matter 







. . 



2-64 



Potassium and loss . 







• • 



011 







11-12 



Degree of hardness before 



boiling 



5-8 



» »> 



after boiling . 



4-1 



Analysis of water from a well belonging to the Waterworks Com- 

 pany at Aston, near Birmingham, by Dr. Hill, F.C.S., Analyst to the 

 Borough of Birmingham : — 



Grs. per gal. 

 Carbonate of Lime . . . . . 4-40 



Carbonate of Magnesia 





2-70 



Carbonate of Soda 



. , 



1-62 



Chloride of Sodium . 



• • 



1-08 



Sidphate of Soda 



. . 



0-70 



Silica, Iron, Alumina 



. 



0-62 



Organic matter 



• 



1-70 





12-82 



Degree of hardness before boiling 



. 5-9 



» » 



after boiling . 



. 1-5 



Dr. Hill has assured the writer that the above may be considered 

 an average sample of the water around Birmingham, as it is similar to 

 a specimen from the well of the borough prison, which lies at an 

 opposite quarter of the town. 



Wall Grange Spring, near Leek, Staffordshire. Analysis by Mr. 

 Phillips, in 1817 :— 



Chloride of Sodium (common salt) . . 

 Sulphate of Lime ..... 

 Carbonate of Lime ..... 

 Traces of Magnesia, Silica, Organic Matter, 

 and loss by operating .... 



Grs per gal 



1-33 



5-79 

 4-73 



0-41 



Degree of hardness 



10-5 



12-26 



The following analysis of the water from the well of the Stour- 

 bridge Water Company has been kindly supplied by the resident 

 engineer, Mr. E. Bindon Marten. The well is only 46 feet deep, and 

 yields about 200,000 gallons per day. 



