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 



1 20 cub. ft. and upwards, sided contents, $ load of 50 cub. ft. 



119 

 99 

 79 

 59 

 39 



to 100 ft. 

 80 

 60 

 40 

 20 

 Under 20 



the conditions being that in computing the measurement 



FIG. 170. 



\1E 



FIG. 



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 ,, ,, " l8 /^ > 



18 12^ 



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. i6. 



