J. C. Branner — Geology of Fernando de JSoronha. 151 



3. 



Di\Al.^jdL- J.IK 



i ■ : ' Mm^Y 



Dyke of phonolite, near the Peak. 



4 



//--">; Hi 





^0w ?«^i«r^^a 



The Sella a G-ineta or St. Michael. 



