A geological inquiry respecting the water-bearing strata of the country around London, with reference especially to the water-supply of the metropolis |
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Page 157
... alkaline silicates , may be decomposed , although with extreme slowness , by the carbonic acid in the water , setting free soluble alkaline carbonates , and leaving as a residue insoluble silicates of alumina , —the basis of pure clay ...
... alkaline silicates , may be decomposed , although with extreme slowness , by the carbonic acid in the water , setting free soluble alkaline carbonates , and leaving as a residue insoluble silicates of alumina , —the basis of pure clay ...
Page 158
... alkaline bicarbonates would promote its decomposi- tion . The freely soluble alkaline silicates may precipitate the carbonate of lime from its solution as a silicate of lime . * * In the course of these changes a very small quantity ...
... alkaline bicarbonates would promote its decomposi- tion . The freely soluble alkaline silicates may precipitate the carbonate of lime from its solution as a silicate of lime . * * In the course of these changes a very small quantity ...
Page 162
... alkaline sulphates . A small quantity of oxide of iron , combined probably with a vegetable acid , remains however in solution . The recent analyses by Prof. Brande and Mr. Warington , of the waters of some of the small streams of this ...
... alkaline sulphates . A small quantity of oxide of iron , combined probably with a vegetable acid , remains however in solution . The recent analyses by Prof. Brande and Mr. Warington , of the waters of some of the small streams of this ...
Page 169
... alkaline beneath London ; it is uncertain , however , whether this does not arise in great part from the infiltration of water * This is in course of being remedied : the same at Dorking . In the mean time these waters afford no fair ...
... alkaline beneath London ; it is uncertain , however , whether this does not arise in great part from the infiltration of water * This is in course of being remedied : the same at Dorking . In the mean time these waters afford no fair ...
Page 170
... alkaline base in these grains . It was in those from the Upper Greensand at Havre that Berthier detected 10 per cent of potash . In * May not the unusually large produce of the wheat crops in the district formed by the bare outcrop of ...
... alkaline base in these grains . It was in those from the Upper Greensand at Havre that Berthier detected 10 per cent of potash . In * May not the unusually large produce of the wheat crops in the district formed by the bare outcrop of ...
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Common terms and phrases
alkaline appear arenaceous argillaceous Artesian average Bedfordshire beds beneath London bore Buckinghamshire calcareous Cambridgeshire carbonate of lime carbonic acid chalk marl considerable Cretaceous crop Degousée depth Devizes division Dorking drainage drift escarpment extent fall fault feet thick fissures flow formation France gallons of water Gault geological Godstone grains gravel green Grenelle ground Guildford height hills impermeable inches iron Kent lithological character London clay Lower Greensand Lower Tertiary sands Lower Tertiary strata mass Merstham mineral mottled clays nearly neighbourhood North Downs observations Oolite outcrop Oxfordshire Paris pass permeable portion probably proportion quantity of water rain rain-fall Reigate rise river rocks Saffron Walden salts sections siliceous soluble springs square miles subterranean sunk superficial area supply of water surface Surrey Tertiary district Thames tract traversed underground Upper Greensand valley varies water-bearing deposit water-bearing strata water-level water-supply Watford whilst
Popular passages
Page 164 - DEGREES OF HARDNESS AND DEGREES OF ALKALINITY EXPLAINED. Degrees of Hardness. — Each degree of hardness indicates as much hardness as would be produced by one grain of chalk per gallon held in solution in the form of bicarbonate of lime, free from any excess of carbonic acid. The degree of hardness caused by a lime salt depends, not on the state of combination of the calcium it contains, but on the quantity of the calcium.