▁the ▁same ▁unique ▁divisions ▁of ▁chap ters ▁in ▁Act s . ▁It ▁came ▁to ▁Italy ▁– ▁probably ▁from ▁Constantin ople ▁– ▁after ▁the ▁Council ▁of ▁Florence ▁( 1 4 3 8 – 1 4 4 5 ). ▁ ▁The ▁manuscript ▁has ▁been ▁hous ed ▁in ▁the ▁V at ican ▁Library ▁( f ounded ▁by ▁Pope ▁Nicholas ▁V ▁in ▁ 1 4 4 8 ) ▁for ▁as ▁long ▁as ▁it ▁has ▁been ▁known , ▁possibly ▁appearing ▁in ▁the ▁library ' s ▁earliest ▁catalog ▁of ▁ 1 4 7 5 ▁( with ▁sh elf ▁number ▁ 1 2 0 9 ), ▁but ▁definitely ▁appearing ▁in ▁the ▁ 1 4 8 1 ▁catalog . ▁In ▁the ▁catalog ▁from ▁ 1 4 8 1 ▁it ▁was ▁described ▁as ▁a ▁" B ib lia ▁in ▁trib us ▁column is ▁ex ▁memb ran is ▁in ▁r ube o " ▁( three - column ▁v ell um ▁Bible ). ▁ ▁Coll ations ▁ ▁In ▁the ▁ 1 6 th ▁century ▁Western ▁sch ol ars ▁became ▁aware ▁of ▁the ▁manuscript ▁as ▁a ▁consequence ▁of ▁the ▁correspond ence ▁between ▁Er as mus ▁and ▁the ▁pre fect s ▁of ▁the ▁V at ican ▁Library , ▁success ively ▁Paul us ▁Bomb as ius , ▁and ▁Juan ▁G in és ▁de ▁Sep úl ved a . ▁In ▁ 1 5 2 1 , ▁Bomb as ius ▁was ▁consult ed ▁by ▁Er as mus ▁as ▁to ▁whether ▁the ▁Code x ▁V at ican us ▁contained ▁the ▁Com ma ▁Joh anne um , ▁and ▁Bomb as ius