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
A Certain Smile eventually finds out about the affair, Dominique must learn to get over Luc and accept the transience of their relationship. The novel's fairly straightforward narrative belies the attitudes of the main characters. Dominique and Luc are terrified of boredom, but seemingly relish the transience of their situation. The novel was parodied by Jean Kerr in "Harper's Bazaar" in 1956 as "Toujours Tristesse". The parody also later appeared in her collection of essays, "Please Don't Eat the Daisies". A Certain Smile A Certain Smile (known in French as Un certain sourire), written in a two-month period then published in 1956, is