AERIAL TRAMWAYS 261 
were traveling loaded and the remainder returning empty to 
the loading point. The average output per hour for the tram- 
way was thirty cords of bolts. 
BIBLIOGRAPHICAL NOTE TO CHAPTER XV 
Anonymous: A Newly Patented Aerial Logging Railway. Western Lum- 
berman, Toronto, Ontario, Canada, December, 1912, pp. 40-41. 
Anonymous: Heavy Duty Cable Tramway. The Timberman, Sept., 
1914, pp. 31 and 32 B. 
FoRSTER, G. R.: Das forstliche Transport wesen, Wien, 1888, pp. 242-250. 
FuJiOKA, M.: Notes on Aerial Wire Tramway. Tokyo, Japan, 1915. 
Gayer, Karl: Forest Utilization. (Schlich's Manual of Forestry, 2nd. 
edit., pp. 346-352; translated from the German by W. R. Fisher.) 
Bradbury, Agnew and Company Ltd., London, 1908. 
Nestos, R. R.: Aerial Snubbing Device. The Timberman, April, 1912, 
pp. 49 and 52. 
Newby, F. E.: Handling Logs on Steep Ground with a Gravity Cable 
System. The Timberman, August, 1910, pp. 31-32. 
Riley, F. C: The Opsal Aerial System. The Timberman, Sept., 1914, 
pp. 33 and 34. 
Rogers, C. G.: Note on the Setikhola Wire Ropeway. Indian Forester, 
Feb., 1902, Vol. XXVIII, No. 2, pp. 69-73. 
Steinbeis, Ferdinand: Die Holzbringung im bayerischen Hochgebirge unter 
den heutigen wirtschaftlichen Verhaltnissen, Munchen, 1897, pp. 31-39. 
Wettich, Hans: Moderne Transportanlagen im Dienste der Holzgewinn- 
ung und Holzindustrie. Centralblatt fiir das gesamte Forstwesen, Oct., 
1912, pp. 451 to 460. 
