DISCUSSION OF LOG RULES. 



25 





Q li lO 



oo oo on 



m tfi o o m o Q *ft o in 



1C in O O O ^ 



ift O ^O O *A 



CO CO (N t- rH 



i> C^ c^i "^ J>- 



co co -^ * -^ 



j (N W 



ti <^> 



S S 



co to t> Ci c<i 



OOiCWOOi^ O 



