▁toler ant ▁of ▁sharp ▁curves ▁but ▁more ▁able ▁to ▁accommod ate ▁the ▁presence ▁of ▁m ild ▁grad ients . ▁ ▁Open ing ▁During ▁March ▁ 1 8 8 5 , ▁the ▁first ▁goods ▁trains ▁started ▁running ▁on ▁the ▁new ▁line ; ▁on ▁ 1 ▁July ▁ 1 8 8 5 , ▁it ▁was ▁also ▁opened ▁to ▁passenger ▁trains . ▁In ▁addition ▁to ▁serving ▁local ▁trains , ▁a ▁number ▁of ▁long ▁distance ▁express es ▁made ▁use ▁of ▁the ▁route ; ▁reported ly , ▁the ▁best ▁time ▁achieved ▁from ▁St ▁En och ▁to ▁P ais ley ▁Canal ▁was ▁ 1 7 ▁minutes , ▁compared ▁with ▁ 1 6 ▁minutes ▁to ▁Gil m our ▁Street ▁on ▁the ▁joint ▁line . ▁ ▁During ▁the ▁following ▁year , ▁on ▁ 5 ▁February ▁ 1 8 8 6 , ▁the ▁Pot ter hill ▁branch ▁of ▁the ▁Canal ▁line ▁opened ; ▁this ▁was ▁built ▁to ▁account ▁for ▁the ▁expand ing ▁industrial ▁importance ▁of ▁P ais ley . ▁So on , ▁a ▁total ▁of ▁eight ▁west bound ▁and ▁seven ▁east bound ▁stopping ▁trains ▁were ▁running ▁each ▁day ▁on ▁the ▁Canal ▁line ; ▁of ▁these , ▁five ▁were ▁extended ▁to ▁run ▁onto ▁or ▁from ▁Pot ter hill , ▁while ▁the ▁remainder ▁ran ▁through ▁to ▁John stone . ▁A ▁tri angular ▁j unction ▁was ▁built ▁to ▁provide ▁access ▁to ▁the ▁Pot ter hill ▁line . ▁The ▁Pot ter hill ▁branch ▁would ▁later ▁formed ▁the ▁base ▁of ▁the ▁Bar r head ▁Branch . ▁ ▁During ▁ 1 8 9 4 - 1 8 9