ying , ▁the ▁g ospel ▁libraries ▁remained ▁in ▁possession ▁of ▁the ▁Bol land ists ▁in ▁Br uss els , ▁where ▁it ▁has ▁been ▁around ▁since ▁ 1 8 4 2 . ▁ ▁In ▁addition ▁to ▁the ▁g os eli arium , ▁a ▁Carol ing ian ▁ps alter , ▁called ▁the ▁W acht end on ck se ▁Ps al men , ▁was ▁kept ▁in ▁the ▁ab bey ▁of ▁Mun ster bil zen . ▁This ▁lost ▁ps al ms ▁book ▁from ▁the ▁early ▁ 9 th ▁century ▁was ▁mentioned ▁in ▁a ▁travel ▁report ▁from ▁ 1 4 4 6 ▁as ▁belonging ▁to ▁the ▁poss essions ▁of ▁the ▁abb ess ▁of ▁Mun ster bil zen . ▁In ▁ 1 5 9 1 ▁it ▁was ▁in ▁the ▁possession ▁of ▁the ▁Li ège ▁canon ▁Arnold ▁W acht end on ck , ▁re ctor ▁of ▁the ▁Land r ada ▁alt ar ▁in ▁the ▁ab bey ▁of ▁Mun ster bil zen , ▁and ▁as ▁a ▁result ▁of ▁a ▁dispute ▁between ▁two ▁candidate ▁abb esses ▁the ▁po pe ▁had ▁been ▁appointed ▁as ▁super visor ▁of ▁the ▁property ▁and ▁income ▁of ▁the ▁monaster y . ▁W acht end on ck ▁was ▁a ▁not orious ▁collect or ▁of ▁anti ques ▁and ▁had ▁appropri ated ▁the ▁ancient ▁Ps alter ium , ▁which ▁according ▁to ▁tradition ▁had ▁once ▁belonged ▁to ▁the ▁Holy ▁Am or ▁of ▁Aqu itaine . ▁W acht end on ck ▁l ent ▁the ▁ps alter ium ▁to ▁the ▁Le u ven ▁scholar ▁and ▁human ist ▁Just us ▁Li ps ius , ▁who