, ▁and ▁then ▁tra ve led ▁east ward ▁to ▁Co ahu ila . ▁He ▁crossed ▁the ▁Rio ▁Grande ▁in ▁July ▁ 1 7 6 7 ▁and ▁proceeded ▁to ▁San ▁Luis ▁de ▁las ▁Am ar illas ▁Pres id io ▁( San ▁Sab á ) ▁by ▁way ▁of ▁the ▁upper ▁Nue ces ▁River , ▁where ▁he ▁visited ▁the ▁largely - failed ▁miss ions ▁at ▁El ▁C añ ón . ▁He ▁left ▁San ▁Sab á ▁on ▁August ▁ 4 ▁and ▁reached ▁San ▁Antonio ▁de ▁Bé x ar ▁on ▁August ▁ 2 4 , ▁ 1 7 6 7 . ▁From ▁San ▁Antonio , ▁Rub í ▁tra ve led ▁to ▁Los ▁Ada es ▁and ▁began ▁his ▁ins pection ▁there ▁on ▁September ▁ 1 4 . ▁Sub sequently , ▁he ▁also ▁ins pected ▁the ▁pres id ios ▁at ▁El ▁Or co quis ac ▁and ▁La ▁Bah ía ▁before ▁leaving ▁Texas ▁at ▁L are do ▁in ▁November ▁ 1 7 6 7 . ▁In ▁all , ▁Rub í ' s ▁ins pection ▁of ▁the ▁northern ▁front ier ▁from ▁the ▁G ulf ▁of ▁California ▁to ▁Louisiana ▁occupied ▁him ▁for ▁twenty - three ▁months , ▁during ▁which ▁he ▁tra ve led ▁an ▁estimated ▁ 7 , 6 0 0 ▁miles . ▁ ▁Rub í ' s ▁ins pection ▁revealed ▁a ▁des perate ▁state ▁of ▁affairs ▁among ▁the ▁settlement s ▁in ▁mor thern ▁New ▁Spain . ▁Mun itions ▁and ▁man power ▁were ▁in ▁very ▁short ▁supply , ▁problem atic ▁for ▁a ▁region ▁under ▁the ▁constant ▁threat ▁of ▁Apache ▁Ra ids . ▁He