Category: Science - Earth/Agricultural/Farming
Nearly every civil engineer is familiar with the fact that certain porous soils, such as sand or gravel, absorb water with rapidity, and that the ground composed of them soon dries up after showers. If a well be sunk in such soils, we often penetrate to considerable depths bef...
Nearly every civil engineer is familiar with the fact that certain porous soils, such as sand or gravel, absorb water with rapidity, and that the ground composed of them soon dr...
2. CHAPTER II.This formation has been already alluded to at pp. 5 and 8; it is, next to the chalk and lower greensand, the most extensive source of water supply from wells we have in England,...
3. CHAPTER III.Previous to sinking it will be necessary to have in readiness a stock of buckets, shovels, picks, rope, a pulley-block or a windlass, and barrows or other means of conveying the...
4. CHAPTER IV.The first method of well boring known in Europe is that called the Chinese, in which a chisel suspended by a rope and surrounded by a tube of a few feet in length is worked up a...
5. CHAPTER V.This well consists of a hollow wrought-iron tube about 1-3/4 inch diameter, composed of any number of lengths from 3 to 11 feet, according to the depth required. The water is ad...
6. CHAPTER VI.The first well that was executed of great depth, and which gave rise to the adoption of tools which directed public attention to the art of well boring, was that for the city of...
7. CHAPTER VII._Durham._--Large quantities of water are pumped from the lower Permian sandstone beneath the magnesian limestone of this county, and are used for the supply of the towns of Sund...
8. CHAPTER VIII.-----------------+------------------------------------+------------ | | Thickness Groups. | Strata. | in Feet. -----------------+------------------------------------+-----------...