COAL. 



11 



O Oi O fiiS -^ r^ 05 



PhPh 



WW 



O 00 



o o 



MWWWW 2 



t* lO "^ CO "^ •"• 



Oq 1-lrH 



M-i ^ Ct_4 <tH ^ "t^ 



o o o o o 





WW 



eqto 

 o o 



PhI^Ph 



w'ww' 



P^P^ 



WW 

 oco 



O O 



(k 



Ph^" 



Pi .3 



PiP4 



P^' 



w 



: WW 

 : oo 



W =3 



WW 



w 







Ca 



<NrH 



O 

































pHiH 





iH IH 







O w w 



( 141 ) 



