268 FELLING AND CONVERSION. 



often influences the heatinfj-power of the wood, youn^^ or very 

 old wood may be separated from middle-aged wood. 



It cannot be too often repeated that only sound wood should 

 be classified as timber. Wood, in its present strugj^Ho a<,faiust 

 iron and other substitutes for it, can only win the day when it 

 is sound and durable. This is especially the case where the 

 wood has to be transported long distances, and is subject to 

 indifferent treatment before it reaches the consumer. 



(e) Local Demand. 

 In classifying the produce attention must always be paid to 

 the local demand. Thus, in certain localities, custom may render 

 it necessary to classify wood in a way which is quite uncalled for 

 in other localities. Whilst, however, sufficiently conforming to 

 custom in this respect, the manager should always attend to the 

 chance of changes being gradually introduced in conformity with 

 the demands of more distant markets than his own immediate 

 surroundings. 



3. List of Wood-aHSortments. 



The following list gives all the common sub-divisions of the 

 different classes of produce from the fellings. 



A. Large Timijer. 

 (a) Lofjs. 

 i. Oakwood. 

 1st class, logs over 20 inches in mid-diameter, and 30 feet in 



length, thoroughly sound, straight, fibre not twisted, 



with fine bark and easily split. 

 2nd class, logs over 18 inches in mid-diameter and 30 feet 



long, thoroughly sound, being somewhat bent, coarse- 

 barked and not very fissile. 

 3rd class, logs over 14 inches mid-diameter and 20 feet in 



length, with some defects which cause waste in sawing. 

 4th class, logs over 12 inches mid-diameter and 20 feet long, 



fairly sound, straight-grained and fissile. 

 5th class, logs over 10 inches mid-diameter and 20 feet long, 



fairly straight, but with some knots and defects. 

 6th class, logs over inches mid-diameter and 20 feet long. 



