▁into ▁its ▁own ▁as ▁a ▁discipline , ▁having ▁previously ▁been ▁the ▁responsibility ▁of ▁chem ists ▁and ▁special ized ▁rest or ers ; ▁the ▁International ▁Institute ▁for ▁Conserv ation ▁was ▁established ▁in ▁the ▁early ▁ 1 9 5 0 s ▁( H od ges ▁would ▁become ▁a ▁Fellow ▁in ▁ 1 9 6 0 , ▁serve ▁as ▁Tre as urer ▁from ▁ 1 9 7 1 ▁to ▁ 1 9 7 4 , ▁and ▁Secretary ▁General ▁from ▁ 1 9 8 8 ▁to ▁ 1 9 9 4 , ▁being ▁awarded ▁an ▁Honor ary ▁Fellow ship ▁at ▁his ▁ret irement ▁in ▁recognition ▁of ▁his ▁contributions ▁to ▁the ▁field ). ▁Ged ye ▁and ▁H od ges ▁combined ▁the ▁study ▁of ▁chem istry , ▁arch ae ology , ▁and ▁ancient ▁materials ▁and ▁technology ▁with ▁methods ▁of ▁conservation ▁treatment , ▁alongside ▁practical ▁work ▁on ▁exc av ated ▁and ▁museum ▁objects . ▁H od ges ' s ▁focus ▁on ▁research ing ▁ancient ▁technology ▁led ▁to ▁a ▁series ▁of ▁annual ▁lect ures ▁given ▁to ▁arch ae olog ists ▁and ▁conserv ators , ▁and ▁presentation ▁of ▁his ▁research ▁in ▁two ▁books - ▁Art ifact s : ▁An ▁Introduction ▁to ▁Early ▁Material s ▁and ▁Technology ▁( 1 9 6 4 ), ▁widely ▁respect ed ▁as ▁a ▁" clear ▁and ▁well - organ ized " ▁" ind isp ens able " ▁" class ic ▁text " ▁and ▁Technology ▁in ▁the ▁An cient ▁World ▁( 1 9 7 0 ). ▁ ▁Having ▁established ▁an ▁international ▁reputation , ▁H od ges ▁was ▁invited ▁to