XII.] 
BRITISH OAK,\ 
73 
shall be less than one-fourth of the diameter of the 
piece. 
For the sided timber (Fig. 17)*, it is also agreed that 
the price is to be, for each log measuring— 
120 cub. ft. and upwards, sided contents, $ load of 50 cub. ft. £ 
119 ,, to 100 ft. ,, „ 
99 >» >» 80 ,, >, ,, 
79 ?* >> 60 ,, ,, ,, 
59 )) >> 40 >> >• ,, 
39 ,, >> 20 ,, ,, ,, 
Under 20 „ ,, J; 
the conditions being that in computing the measurement 
FIG. I 7 «. 
FIG. 17^. 
for payment of sided timber, no quarter-inches to be 
allowed in the sidings. All the timber to be so sided 
that, between the wanes,f at half the length of the piece, 
there shall not be less than the siding with one-eighth 
* It has been found in practice that a fairly grown cylindrically-shaped 
British Oak tree of 
30 inches calliper will yield sided timber of about 21 inches. 
24 j, ,, ,» >, 18^5 ,, 
iS ,, ,, ,, ,, 12/2 ,» 
and that generally about two-thirds of the calliper of the rough tree is the 
siding to be obtained from it. 
f Wane is the natural rounded edge of the log, W Fig. 16b. 
