4. Alternate Routes.
 
    a. The Lena River - AldenRiver to Tommot -
 improved road to Bolshoi Never. This route has the same merits
 and demerits as the one described above.
 
             b. Another North Siberian route partly developed by the Rus"sians is as follows: The
Kolyma river south to Byrybylym (approximately 350 miles south of the mouth of the Kolyma) -
unimproved road south to Ust-Utinaya improved road to Nagayevo, an excellent port on the Sea
of 0khotsk, ice-free for six months. Thence coastwise to Nikolaevsk. The route has the same
limitations as the others. However it is shorter, but on the other hand more susceptible to attack
by the Japanese. The latest data on this route are of 1938.
 
5. Conclusion.
 
              That the northern routes to Siberia could be utilized in dire necessity, but they are
impracticable for heavy shipping.
 
 
 
 
 
 
R.S. BRATTON,
Colonel, G.S.C.,
Chief, Intelligence Group.