Show rl international nal Markings l The land part of the international boundary between the United States State and Canada which Is about 1749 miles In length Is marked variously with monuments pf if Iron aluminum bronze set on concrete stone cairns and concrete placed at points rang rang- rangIng rangIng ing from two and a n halt half to four miles apart A vista has been cut through the trees where the line runs over wooded areas The water part or of orthe the boundary Is Js defined by courses and dIstances between turning points that are referred to as light light- lighthouses lighthouses houses or markers of metal or con conCrete crete rete on the tIle shores of lakes and banks of streams |