1. At how many points on the International boundary do United States railways and Canadian railways cross said International boundary, west of Port Arthur and east of Port Arthur, respectively?
2. What is the average distance of the Great Northern railway from the Canadian boundary?
3. Apart from the Great Northern railway, at how many points west of Port Arthur and at how many points east of Port Arthur do United States railways extend to a point within 30 miles of our southern International boundary ?
Subtopic: INTERNATIONAL RAILWAY TRAFFIC.