Artesian aquifer its recharge zone is at a higher elevation than the head of the well. Artesian wells were named after the former province of Artois in France, where many artesian wells were drilled by Carthusian monks from 1126. Artesian aquifer An aquifer is a geologic layer of porous and permeable material such as sand and gravel, limestone, or sandstone, through which water flows and is stored. An artesian aquifer is a confined aquifer containing groundwater under positive pressure. An artesian aquifer is trapped water, surrounded by layers of impermeable rocks or clay, which applies positive pressure to the water contained within
The Ciphers of the Monks the four digits. The number can then be determined by visual inspection. The numeral system was invented in the 1300s by French Cistercian monks. It was later replaced by the Hindu–Arabic numeral system. In any case, this numeral system later inspired several shorthands and secret ciphers. In Britain, the first person to use this cipher was John of Basingstoke. The book has generally received positive reviews. The Ciphers of the Monks The Ciphers of the Monks: a Forgotten Number-notation of the Middle Ages is a book by David A. King. The book describes in detail a numeral system that was