RAILWAY RATES 



321 



"ton" contains rather more cubic contents than ij "tons" 

 of square timber. 



So that, cceteris paribus, a rate of 143. a ton for timber 

 in the plank would be equal to a rate of 173. lod. a ton for 

 timber in the "round"; 1 therefore, an increase of 2/f per 

 cent, on the rate for square timber should be made for round 

 timber. But, in order to make a perfectly impartial 

 comparison between rates on imported planks or baulks and 

 home-grown timber in the round, it is necessary to make 

 some allowance for the difference in the weight per foot of 

 the same kind of timber, owing to the home-grown timber 

 being consigned in a green state and the imported timber 

 being more or less seasoned. 



This cannot be determined with mathematical accu- 

 racy, as every individual case differs; but, in a general way, 

 there is a striking difference in the weight per foot (true 

 contents). 



Without entering into too much detail, the following may 

 be taken as a rough average of the weights per foot (true 

 contents) of the heavy timbers and of the conifers, both in 

 the green state and when seasoned : 



But, as the home-grown timber may not be absolutely 

 green, and as the imported timber will not be absolutely 



1 This presumes that the weight of wood and bark is equal (per 

 volume), and that the timber is not barked. 



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