 | William Buckland - 1837 - 646 Seiten
...by one Bore Hole of sufficient size to contain a double pipe, viz. a smaller pipe included within a larger one, with an interval between them for the...the fountain b", whilst the larger pipe a brings up the water from stratum A to the lower level a ': both these streams are employed to supply the Canal-basin... | |
 | William Buckland - 1837 - 476 Seiten
...by one Bore Hole of sufficient size to contain a double pipe, viz. a smaller pipe included within a larger one, with an interval between them for the...lower stratum B, to the highest level of the fountain //', whilst the larger pipe a brings up the water from stratum A to the lower level o' : both these... | |
| |
B are different; the water from the lowest stratum B rising to the highest level b" ; that from the upper stratum A rising only to a'. The water from both strata is thus brought to the surface by one Bore Hole of sufficient size to contain a double pipe,... 