DISCUSSION OF LOG RULES. 



21 



iHiHlHr-l 



^1 ^ ^ cq &j ^ (^ 



S5 S^^SJoS? 



<M (N(NC<I(M<M<MCC1 



K 



j! 5 

 m 



H 



SS 



s s 



r-l(NCO-^ia CO^OOO5C)T-IC<1CO '1' 



iHi-ll-llHr-l i-Hi-Hr-lr-l(M(M(M(M (M 



r-l <N 



CO CO 



418022 



