Medieval technology that its potential was fully achieved. Artesian well (1126) A thin rod with a hard iron cutting edge is placed in the bore hole and repeatedly struck with a hammer, underground water pressure forces the water up the hole without pumping. Artesian wells are named after the town of Artois in France, where the first one was drilled by Carthusian monks in 1126. Central heating through underfloor channels (9th century) In the early medieval Alpine upland, a simpler central heating system where heat travelled through underfloor channels from the furnace room replaced the Roman hypocaust at some places. In Reichenau
Book of the First Monks Book of the First Monks The Book of the First Monks () is a medieval Catholic book in the contemplative and eremetic tradition of the Carmelite Order, thought to reflect the spirituality of the Prophet Elijah, honored as the Father of the Order. The book is one of the most important documents of the Order because it influenced many of the Carmelite Saints according to the spirituality of the first Carmelite hermits. Some medieval Carmelites thought it antedated the Carmelite Rule of St. Albert, although this is disputed due to a lack of evidence. It is this dispute that has