A geological inquiry respecting the water-bearing strata of the country around London, with reference especially to the water-supply of the metropolis |
From inside the book
Results 1-5 of 69
Page
... FALL OF RAIN - ON THE QUANTITY INFILTRATING BENEATH THE SURFACE - ON THE POWER OF ABSORPTION AND ON THE PERMEABILITY OF THE WATER - BEARING STRATA • 108 • 12. ON THE VOLUMES , DIMENSIONS , AND CAPACITY FOR WATER OF THE SEVERAL WATER ...
... FALL OF RAIN - ON THE QUANTITY INFILTRATING BENEATH THE SURFACE - ON THE POWER OF ABSORPTION AND ON THE PERMEABILITY OF THE WATER - BEARING STRATA • 108 • 12. ON THE VOLUMES , DIMENSIONS , AND CAPACITY FOR WATER OF THE SEVERAL WATER ...
Page 4
... falling upon the surface generally , -the other from streams produced by the melting of snow in mountain districts ... falls is effected , first , by streams and rivers ; secondly , by evaporation and vegetation ; and thirdly , by ...
... falling upon the surface generally , -the other from streams produced by the melting of snow in mountain districts ... falls is effected , first , by streams and rivers ; secondly , by evaporation and vegetation ; and thirdly , by ...
Page 5
... fall of the land be unfavourable , by evaporation . But where the strata at the surface are porous and permeable , a large portion of the rain will pass into the interior of the strata , to be rendered back again , naturally by springs ...
... fall of the land be unfavourable , by evaporation . But where the strata at the surface are porous and permeable , a large portion of the rain will pass into the interior of the strata , to be rendered back again , naturally by springs ...
Page 6
... falling upon it would be carried off into the usual surface channels , or would remain on the surface , until removed by evaporation into the atmosphere . * But this clay is very frequently covered by an irregular bed of flint gravel ...
... falling upon it would be carried off into the usual surface channels , or would remain on the surface , until removed by evaporation into the atmosphere . * But this clay is very frequently covered by an irregular bed of flint gravel ...
Page 8
... falling in of the ground . The bore in the limestone probably did not require tubing . So abundant seems to have been the supply , that the water from these sands not only rose through the bore in the limestone , and filled the shaft ...
... falling in of the ground . The bore in the limestone probably did not require tubing . So abundant seems to have been the supply , that the water from these sands not only rose through the bore in the limestone , and filled the shaft ...
Other editions - View all
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.