Oixa^ri. . JoLirn . Ge ol , S o c .Tol , _XX11 , Tl , YlII 



32 32a. 



Z.MWillia.ms P.L.S . P.Z.S ."JiOa. M.&Tf Ha.nKsu't 111:5) 



COAL-P_LAI^TS OF BRITISH N.AMERICA. 



