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 79
... Merstham to Farnham ; from which point it trends to the south , owing to an extension of the chalk in that direction . It reappears for short distances in the small valleys of Kingsclere and of Shalbourne , and again emerges from below ...
... Merstham to Farnham ; from which point it trends to the south , owing to an extension of the chalk in that direction . It reappears for short distances in the small valleys of Kingsclere and of Shalbourne , and again emerges from below ...
Page 80
... Merstham that the upper green- sand attains its greatest development along this line , forming a range of low hills at the foot of the Chalk Downs . * Beyond Betchworth it is not so well exhibited , but may be traced with- out ...
... Merstham that the upper green- sand attains its greatest development along this line , forming a range of low hills at the foot of the Chalk Downs . * Beyond Betchworth it is not so well exhibited , but may be traced with- out ...
Page 83
... Merstham and Gatton , the quarries one mile north - east of Reigate Church ; and one furlong north - east of the Betchworth station , the cutting on the railway three furlongs north of the Merstham station ; and the one immediately east ...
... Merstham and Gatton , the quarries one mile north - east of Reigate Church ; and one furlong north - east of the Betchworth station , the cutting on the railway three furlongs north of the Merstham station ; and the one immediately east ...
Page 84
... Merstham , thinner apparently nearer Guildford , * about 100 feet at De- vizes and Swindon , and increases again to about 150 or 160 feet as it ranges into Cambridgeshire . This formation is quite impermeable , and therefore holds up ...
... Merstham , thinner apparently nearer Guildford , * about 100 feet at De- vizes and Swindon , and increases again to about 150 or 160 feet as it ranges into Cambridgeshire . This formation is quite impermeable , and therefore holds up ...
Page 90
... Merstham , sunk 150 feet through gault to the underlying Lower Greensand , whence a plentiful supply of water was ob- tained . ( Trans . Geol . Soc . 2nd Ser . Vol . IV . p . 140. ) The Rev. J. C. Clutterbuck informs me of a well a few ...
... Merstham , sunk 150 feet through gault to the underlying Lower Greensand , whence a plentiful supply of water was ob- tained . ( Trans . Geol . Soc . 2nd Ser . Vol . IV . p . 140. ) The Rev. J. C. Clutterbuck informs me of a well a few ...
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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.