74 



TIMBER AND TIMBER TREES. [CHAP. 



added thereto ; to be fairly sided from end to end, 

 parallel, and to be measured for contents as far as it 

 holds, at the top end, on each side, between the wanes, 

 three-fourths of the siding of the piece. The pane* at 

 the top is to determine the length of the piece ; but if 

 the length of the sides be not equal, the mean is to be 

 taken. The timber to be so hewn upon the moulding 

 edges that the surface of the square shall not be less 

 than one-fourth the diameter of the piece. The timber 

 to be measured for contents at the middle of the length, 



FromAtoB 5"and vpwarfo 

 FIG. 1 8. 



FIG. 19. 



when fairly grown from end to end, but if otherwise, it 

 will be regulated by the stops or joggles. Such timber 

 as has length beyond the prescribed proportion of pane, 

 being compass timber, and the additional length aiding 

 the conversion, or such as shall be bond fide convertible 

 for a beam piece, to be received at the discretion of 

 the officers, who are to determine the length ; two-thirds 

 of the additional length to be measured for the cubic 

 contents. 



Pane is the hewn or sawn surface of the log, P Fig. i6. 



