226 bulletin: museum of comparative zoology. 



My researches at Santiago de Cuba, consisting of a section across 

 the Sierra Maestra from the coast to the Rio Cauto, convinced me that 

 the crystaUine rocks of that region are Cretaceous and Post-Eocene 

 Tertiary, and not Paleozoic, as asserted by Frazer ; and I am more 

 than ever inchned to doubt his conclusions and those of Bergt relative 

 to Cuba and San Domingo. The descriptions of the region by Kim- 

 ball are approximately correct and reliable. 



