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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... RISE AT LONDON 143 § 16. ON THE PROBABLE QUALITY OF THE WATER IN THE DEEP - SEATED BEDS OF THE UPPER AND LOWER GREENSANDS 153 VI . - CONCLUDING REMARKS . . 175 APPENDIX A. ON THE ARTESIAN WELLS IN THE TERTIARY AND CRETACEOUS DIS- TRICTS ...
... RISE AT LONDON 143 § 16. ON THE PROBABLE QUALITY OF THE WATER IN THE DEEP - SEATED BEDS OF THE UPPER AND LOWER GREENSANDS 153 VI . - CONCLUDING REMARKS . . 175 APPENDIX A. ON THE ARTESIAN WELLS IN THE TERTIARY AND CRETACEOUS DIS- TRICTS ...
Page 4
... rise naturally to a height much above that of the general level of the ground in London . It may be observed also , that although the questions im- mediately to be discussed are of a local nature , they involve others applicable to all ...
... rise naturally to a height much above that of the general level of the ground in London . It may be observed also , that although the questions im- mediately to be discussed are of a local nature , they involve others applicable to all ...
Page 7
... rise . When the strata are thick and porous , as the sands around Bagshot , Reigate , or Woburn , a large portion of the rain- water is at once absorbed , and permeates freely through them . The infiltration is in proportion to the ...
... rise . When the strata are thick and porous , as the sands around Bagshot , Reigate , or Woburn , a large portion of the rain- water is at once absorbed , and permeates freely through them . The infiltration is in proportion to the ...
Page 8
... rise through the opening to a height proportionate to the level at which it stands in those strata at their outcrop , -and if that should be higher than the surface of the ground where the bore has been made , the water will not only rise ...
... rise through the opening to a height proportionate to the level at which it stands in those strata at their outcrop , -and if that should be higher than the surface of the ground where the bore has been made , the water will not only rise ...
Page 16
... rise again within a moderate SOUTH . Fig . 2 . X a NORTH . z distance , as shown in fig . 2 , where they dip to the south at b and c , and rise to the south band c ' , it constitutes the nately ; sometimes the word Deposit is used in ...
... rise again within a moderate SOUTH . Fig . 2 . X a NORTH . z distance , as shown in fig . 2 , where they dip to the south at b and c , and rise to the south band c ' , it constitutes the nately ; sometimes the word Deposit is used in ...
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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.