TIMBER SLIDES AND CHUTES 277 
of the slide. A round trip was made in 8 minutes, from 1500 
to 2500 board feet being lowered at one time. Two men were 
required to operate this system, one to roll logs into the chute 
and the other to manipulate the drum. 
Several slide tenders are required to keep slides greased and 
watered, adjust goose-necks and make repairs. As a general 
rule, several kinds and sizes of logs are run indiscriminately 
during the day, and it is necessary to use goose-necks on large 
logs and to remove them for the slower running small logs. Where 
logs have jumped out, laborers are required tt) return 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 
Slides 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 fonn to construct, ^ 
because they must be built stronger and more rigid than other 
forms. Curves require about one-third more labor to build than 
straight stretches. Slides constructed during the winter cost 
about 25 per cent more to build than during wami weather and 
are often troublesome in the spring when the frost leaves the 
ground. 
BIBLIOGRAPHICAL NOTE TO CHAPTER XVI 
VON Almburg, Dr. F. Axgerholzer: Beitrag zur Kenntrds der djiiamis- 
chen Vorgange beim Abriesen des Holzes in Holzriesen. Centralblatt 
flir das gesamte Forstwesen, April, 1911, pp. 161-179. 
FoRSTER, G. R.: Das Forstliche Transportwesen, pp. 45-^8. Mortiz 
Perles, Wien, 1888. 
Gayer, Karl: Forest Utilization. (Schlich's Manual of Forestrj^ Vol. V, 
pp. 316-322; translated by W. R. Fisher.) Bradbury, Agnew and Co., 
Ltd., London, 1908. 
Kubelka, August: Der Riesweg als Holzbringungsanstalt des Hochge- 
birges. Centralblatt fiir das gesamte Forstwesen. Wien, Aug.-Sept., 
1903, pp. 325-377. 
Schonwiese, Heinrich: Die Wegriesen im Reichforste Cadino. Central- 
blatt fiir das gesamte Forstwesen, Aug.-Sept., 1903, pp. 377-387. 
Stoddard, E. I.: Chute Logging in Eastern Oregon. The Timberman, 
July, 1920, p. 35. 
