▁a ▁gla ze ▁around ▁ 1 9 0 0 ; ▁all ▁their ▁formulas ▁were ▁deliber ately ▁destroyed ▁when ▁the ▁pot tery ▁closed ▁in ▁ 1 9 3 5 . ▁Another ▁English ▁art ▁pot tery ▁which ▁produced ▁sang ▁de ▁bo e uf ▁was ▁that ▁of ▁Bernard ▁Moore . ▁His ▁pot tery ▁in ▁Sto ke - on - Tr ent ▁special ised ▁in ▁fl amb é ▁gla zes ▁from ▁ 1 9 0 5 ▁till ▁the ▁closure ▁of ▁the ▁business ▁in ▁ 1 9 1 5 . ▁ ▁From ▁ 1 9 0 3 , ▁the ▁English ▁architect ▁Les lie ▁Green ▁used ▁an ▁industrial , ▁solid , ▁sang ▁de ▁bo e uf ▁gla ze ▁on ▁the ▁gla zed ▁architect ural ▁terra - c otta ▁t iles ▁and ▁decor ative ▁elements ▁for ▁the ▁ex ter iors ▁of ▁the ▁stations ▁of ▁a ▁large ▁part ▁of ▁the ▁London ▁Under ground ▁system , ▁which ▁was ▁then ▁divided ▁between ▁a ▁number ▁of ▁commercial ▁companies . ▁His ▁employ er , ▁the ▁Under ground ▁Electric ▁Rail ways ▁Company ▁of ▁London ▁was ▁building ▁the ▁Great ▁Northern , ▁Pic c ad illy ▁and ▁B rom pton ▁Railway , ▁the ▁Baker ▁Street ▁and ▁Water lo o ▁Railway ▁and ▁the ▁Char ing ▁Cross , ▁E ust on ▁and ▁H amp st ead ▁Railway , ▁which ▁are ▁now ▁respectively ▁sections ▁of ▁the ▁Pic c ad illy ▁line , ▁Baker lo o ▁line ▁and ▁Northern ▁line . ▁The ▁Le eds ▁Fire cl ay ▁Company ▁made ▁the ▁t iles . ▁ ▁The ▁American ▁cer am ist ▁F ance ▁Fran