THE COAST OF NOllTHUMBEllLAHD, ^61 
FERNE ISIyANDS. 
73. Trap of Ferne Islands. 
74. Limestone in Trap. 
75. Do., part of a bed. 
76. Compact Felspar, above 75. 
77. Felspar passing into Claystone. 
7S. A bed of Limestone. 
80. Red Limestone occm'ring in Bimdle Bay. 
The Limestones near the Trap are generally highly phos^ 
phprpsc^nt when put in a coarse powder on a heated irpn. 
