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BULLETIN 711, U. S. DEPARTMENT OF AGRICULTURE. 
GROUND YARDING. 
Up to within the last year or so the bulk of the timber was yarded 
by the ground system. Available information does not indicate how 
much is handled by this system at present. That it has been replaced 
to a considerable extent by the high-lead and overhead systems is 
clear. This system of yarding was long the one standard system, 
and it is the system which present-clay operators know best. For 
this reason it is here treated at greater length than the other systems ; 
indeed, the discussion of ground yarding is made to serve as a basis 
for the discussion of high-lead and overhead systems. 
