    Senjence The advent. of the Browe Age  (about 3200, be, aud the spread ol cysts  ruled by igs. marked hy  the appearance of rol fobs. confining  brome abjets iu such places as Tos  in fhe west audAlcals 2 near Aaa,    Sentence 2% The owe age stared over  5000 years a.