üss el ▁der ▁E w esp rache , ▁dar geb oten ▁in ▁den ▁Gram mat ischen ▁Grund z ü gen ▁des ▁An l od iale kt s , ▁was ▁published ▁by ▁mission ary ▁J . ▁B . ▁Sch leg el ▁of ▁the ▁Bre men ▁mission . ▁Five ▁different ▁dialect s ▁of ▁G be ▁( at ▁that ▁time ▁called ▁the ▁E w é ▁Language - Field ) ▁were ▁already ▁distinguished ▁by ▁Sch leg el , ▁notes ▁Robert ▁Need ham ▁C ust ▁in ▁his ▁Modern ▁L anguages ▁of ▁Africa ▁( 1 8 8 3 ). ▁The ▁dialect s ▁listed ▁by ▁C ust ▁do ▁not ▁map ▁exactly ▁onto ▁the ▁five ▁sub groups ▁now ▁distinguished ▁by ▁Cap o , ▁which ▁is ▁not ▁too ▁surprising ▁since ▁C ust ▁himself ▁adm its ▁that ▁he ▁re lies ▁on ▁a ▁mult itude ▁of ▁often ▁conflic ting ▁sources . ▁Fon ▁is ▁in ▁fact ▁listed ▁twice ▁( once ▁as ▁' the ▁dialect ▁of ▁the ▁province ▁of ▁D ah om é ' ▁and ▁once ▁as ▁' F og be '). ▁ ▁Where ▁previous ▁literature ▁consisted ▁mostly ▁of ▁travel ▁journ als ▁sometimes ▁accompanied ▁by ▁short ▁word ▁lists , ▁Sch leg el ' s ▁work ▁marked ▁the ▁beginning ▁of ▁a ▁period ▁of ▁pro l ific ▁lex ic ographic ▁and ▁lingu istic ▁research ▁into ▁the ▁various ▁G be ▁languages . ▁Import ant ▁writers ▁of ▁this ▁period ▁include ▁Johann ▁Gott lie b ▁Christ aller ▁( Die ▁Vol ta - Sp ra chen - G ru ppe , ▁ 1 8 8 8 ), ▁Ernst ▁Hen r ici ▁(