National Geographic : 1913 Mar
AN ILLUSTRATION OF HOW THE RIO GRANDE FORMS A NEW BANCO The river is flowing straight across the front of the picture, from right to left. The trees on theleft areontheMexican bank andthe boat is on the American bank. The broad stream in the center of the picture was formerly the courseof theriver, andthetrees ontheright once stood on the American bank. They have now been cut to the Mexican side and, with the land on which they stand, form anew banco.