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 154
... carbonic acid gas . * Humboldt and Gay Lussac † have shown that the quantity thus held in solution equals about 1th of the volume of the water , and that the proportion of the oxygen to the nitrogen , instead of being as 21 to 79 , the ...
... carbonic acid gas . * Humboldt and Gay Lussac † have shown that the quantity thus held in solution equals about 1th of the volume of the water , and that the proportion of the oxygen to the nitrogen , instead of being as 21 to 79 , the ...
Page 155
... carbonic acid ; but if the water percolates through the surface soil more rapidly , then it carries into the substratum a portion of the air originally brought down by the rain ; and that this air can be long held in the water , is ...
... carbonic acid ; but if the water percolates through the surface soil more rapidly , then it carries into the substratum a portion of the air originally brought down by the rain ; and that this air can be long held in the water , is ...
Page 157
... carbonic acid in the water , setting free soluble alkaline carbonates , and leaving as a residue insoluble silicates of alumina , —the basis of pure clay . The greatest proportion ( almost all ) of the iron in this forma- tion being in ...
... carbonic acid in the water , setting free soluble alkaline carbonates , and leaving as a residue insoluble silicates of alumina , —the basis of pure clay . The greatest proportion ( almost all ) of the iron in this forma- tion being in ...
Page 158
... carbonic acid . In the decomposition of the compound alkaline silicates , when the soda or potash are brought at first to the state of simple carbonates only , they cause the precipitation of any carbonate of lime present , by ...
... carbonic acid . In the decomposition of the compound alkaline silicates , when the soda or potash are brought at first to the state of simple carbonates only , they cause the precipitation of any carbonate of lime present , by ...
Page 160
... carbonic acid . * The consequence is , that well waters I need scarcely point out in confirmation of this view how common an occurrence carbonic acid gas ( foul air ) is in wells , or the accidents to which it gives rise . One of the ...
... carbonic acid . * The consequence is , that well waters I need scarcely point out in confirmation of this view how common an occurrence carbonic acid gas ( foul air ) is in wells , or the accidents to which it gives rise . One of the ...
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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.