National Geographic : 1947 Apr
M.A.Huberman Rubber-shod Boatmen Tie a Raft with Grass Ropes. American Lumberjacks Look in Vain for Calked Boots, Wire Cables, and Pike Poles Logs roll down concrete aprons into the Yoneshiro River. Two men, one at a pole, the other at a sweep, will steerthe raft toasawmill downstream. Rafting israre in Japan; mountain streams are too rough. Grass ropes, tough enough to be used several times, surprisedUnited States foresters (page 509).