48 AN AUSTRALIAN STUDY OF AMERICAN FORESTRY. 
An advantage from a forestry point of view is that this cableway system 
is the only system of power logging yet devised which is not extremely 
destructive to seedling growth. It has the defect that it damages standing 
timber. 
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Loading cable 
_ Oil fuel is used extensively in donkey engines in lieu of coal and wood. 
It is claimed that the forest fire danger is diminished by the use of oil fuel, 
and the efficiency of the engines is increased 15 per cent. to 25 per cent., thus 
achieving a considerable reduction in logging expenses. ‘ 
The “snaking” system, such as is being used at Woolgoolga, New South 
Wales, is a third method, not so largely employed in America. 
