8 ▁- ▁Municipal ▁Library ▁active . ▁▁ 1 8 0 0 ▁- ▁François ▁Sch ef fer ▁becomes ▁mayor . ▁▁ 1 9 th ▁century ▁▁▁ 1 8 1 5 ▁- ▁Pr us si ans ▁in ▁power ▁per ▁Tre aty ▁of ▁Paris . ▁▁ 1 8 2 1 ▁- ▁Luxemb urger ▁Wo chen blatt ▁newspaper ▁begins ▁publication . ▁▁ 1 8 2 7 ▁- ▁Journal ▁de ▁la ▁ville ▁et ▁du ▁Grand - D uch é ▁de ▁Luxemb ourg ▁newspaper ▁in ▁publication . ▁▁ 1 8 3 3 ▁- ▁Roman ▁Catholic ▁dioc ese ▁of ▁Luxemb ourg ▁established . ▁▁ 1 8 3 8 ▁- ▁City ▁Hall ▁built . ▁▁ 1 8 4 8 ▁- ▁Luxemb urger ▁Wort ▁newspaper ▁begins ▁publication . ▁▁ 1 8 5 0 ▁- ▁Society ▁of ▁the ▁Natural ▁Sciences ▁established . ▁▁ 1 8 5 5 ▁- ▁P es cat ore ▁Institute ▁( char ity ) ▁founded . ▁▁ 1 8 5 8 ▁- ▁Population : ▁ 1 3 , 1 2 9 . ▁▁ 1 8 5 9 ▁- ▁Luxemb ourg ▁railway ▁station ▁opens . ▁▁ 1 8 6 0 ▁- ▁Hall ▁of ▁the ▁Chamber ▁of ▁Deput ies . ▁▁ 1 8 6 1 ▁- ▁Vi ad uct ▁built ▁over ▁Pet rus se ▁valley . ▁▁ 1 8 6 7 ▁ ▁Luxemb ourg ▁Cris is . ▁ ▁Fort ress ▁dis m ant led ▁per ▁Tre aty ▁of ▁London . ▁▁ 1 8 6 8 ▁- ▁Royal - Gr and ▁Du cal ▁Institute ▁established . ▁▁ 1 8 7 2 ▁ ▁Municipal