Papurau Newydd Cymru

Chwiliwch 15 miliwn o erthyglau papurau newydd Cymru

Cuddio Rhestr Erthyglau

12 erthygl ar y dudalen hon

RUiTS UPON GARDENING.1 ♦

AGRICULTURE. --+--

SPORTS AND PASTIMES --+--

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JAMAICA. {

A NEW ARTESIAN WELL.

Newyddion
Dyfynnu
Rhannu

A NEW ARTESIAN WELL. To the two Artesian wells which Paris already possesses, a third is now being added, viz., at the point called Butte aux Cailles, in the 13th arrondissement (Gobelins). The perforation has now reached the depth of 82 metres, being 20 metres and a half below the level of the sea; but before reaching that point, considerable difficulties have had to be overcome in the shape of intermediate sheets of water forming as it were a series of subterranean lakes. The first of these was kept within its natural bed by means of a strong iron tube driven perpendicularly through it; that which followed received wooden palings, and the sub. sequent stratum being clay, the masonry was continued without difficulty to a depth of 5 metres above the level of the sea. But at this point a layer of agglo- merations was reached which let a great deal of water escape. It thus became necessary to have again re- course to pumps; those employed were in the aggre- gate of twenty horse-power. 0 sving to the bad nature of this stratum, it was resolved to protect the per- foration by a revetment of extraordinary thickness; and in order that the well might preserve its diameter of two metres notwithstanding, the upper part has had to be widened in proportion, so as to give it the enormous width of four metres at the top. After this labour the work of perforation was continued through a stratum of pivolithio limestone. At the depth corresponding to the level of the sea they reached a layer of tabular chalk, all pierced with large holes, forming so many spouts as thick as a man's thigh, through which water poured into the well with incredible velocity. While the pumps were at work to get rid of this water a cylindrical revetment ef brioks was built on a sort of wheel made of oak, and laid down flat at the bottom of the perforation by way of a foundation, and the intermediate space between this cylinder and the chalk stratum was filled with concrete, 47,000 kilos, of which were expended in this operation. As soon as the concrete might be COB- sidered to have set, or attained sufficient consistency, the brick cylinder was taken to pieces again, and the perforation continued to the pressure point, where a new sheet of water has been reached, requiring in- genious oontrivances.

—■————■r THE FENIÅN TRIALS.

SHOCKING MURDER NEAR LANCASTER.

........--THE PEABODY FUND.—-REPORT…

THE X 2,5 0 0 BREACH OF PROMISE…

:FACTS AND F ACETI''

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