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
Citizens: A Chronicle of the French Revolution remarks: "He pities the plumage, but forgets the dying bird". Slavin finds it "regrettable that such a capable historian as Schama [...] should be so prejudiced against the Revolution". Citizens: A Chronicle of the French Revolution Citizens: A Chronicle of the French Revolution is a book by the historian Simon Schama, published in 1989, the bicentenary of the French Revolution. <br>"The terror," declared Schama in the book, "was merely 1789 with a higher body count; violence ... was not just an unfortunate side effect ... it was the Revolution's source of collective energy. It was what made the Revolution revolutionary."