mar 8, 1888 - Les Xipéhuz - J.-H. Rosny
Description:
 It describes the fight that threatens humanity, in the beginning of its history, against a new form of intelligent non-organic life, the Xipéhuz, some sort of sentient crystals. It is both his first story set in prehistoric times, and his first science-fiction story, although the term did not yet exist. 
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