627 



more recent formation, white, with smooth frac- 

 ture, or imperfectly conchoid, and divided in very 

 thin layers, which (Vol. iii, p. 107,) succeeds to 

 the bluish-grey limestone formation of Cumanacoa. 

 I call this in the first instance the limestone 

 formation of Caripe, on account of the cavern 

 of that name which is inhabited by thousands 

 of nocturnal birds. This limestone appeared 

 to me identical, 1st. with the limestone of Morro 

 de Barcelona, and the Chimanas Islands (Vol. 

 iii, p. 365 ; Vol. vi, p. 80) which contains small 

 layers of black kiesehchiefer, (slaty jasper,) desti^ 

 tute of veins of quartz, and breaking into frag- 

 ments of parallelopid form ; 2d. with whitish- 

 grey limestone, with smooth fracture of Tisnao, 

 which seems to cover the sandstone of the 

 Llanos (Vol. iv, p. 386). We find the forma- 

 tion of Caripe in the Island of Cuba (between the 

 Havannah and Batabano, and between the port 

 of Trinidad and Rio Guaurabo), as in the islets 

 of the Caymans. 



I have hitherto described the secondary 

 limestone- formations of the chain of the shore, 

 without giving them the systematic names 

 which may connect them with the formations 

 of Europe. During my stay in America, I took 

 the limestone of Cumanacoa for zechstein, or 

 alpine limestone, and that of Caripe for jurassic 

 limestone. The carburated and slightly bitu- 

 minous marl of Cumanacoa, analogous to thq 



2 t 2 



