TIMBER SLIDES AND CHUTES 241 



them to the slide. This is done by building an improvised chute 

 from the ground to the slide, and dragging the logs up with a 

 team and tow line, or by rolling the logs up by hand on spiked 

 skids. This work is done after the season's sliding has been 

 completed. 



COST 



SHdes vary greatly in cost depending on their character, the 

 amount of cribbing required, the number of curves, the season 

 of the year in which they are built and the efficiency of the labor. 



Running slides are the most expensive form to construct, 

 because they must be built stronger and more rigid than other 

 forms. Curves require about one-third more labor to build than 

 do straight stretches. Shdes constructed during the winter cost 

 about 25 per cent more to build than during warm weather and 

 are often troublesome in the spring when the frost leaves the 

 ground. 



The cost per rod is approximately as follows: Earth slides, 

 from 20 to 50 cents; 2-pole to 3-pole slides, from $3 to $5; 

 plank slides, from $1.50 to $2; chutes on the Pacific Coast, 

 from $8 to $10. 



The cost per mile of operating a slide ranges from 50 cents to 

 $1 per thousand feet log scale. 



BIBLIOGRAPHICAL NOTE TO CHAPTER XVI 



Von Almburg, Dr. F. Augenholzer: Beitrag zur Kenntnis der dynamischen 



Vorgange beim Abriesen des Holzes in Holzriesen. Centralblatt fur das 



gesamte Forstwesen, April, 1911, pp. 161-179. 

 FoRSTER, G. R.: Das Forstliche Transportwesen. pp. 45-68. Moritz Perles. 



Wien, 1888. 

 Gayer, Karl: Forest Utilization. (Schlich's "Manual of Forestry," Vol. V, pp. 



316-322; translated by W. R. Fisher.) Bradbury, Agnew and Company, 



Ltd., London, 1908. 



