24 



bulletin: museum of comparative zoology. 



This case is worthy of attention, as showing also that horizontality 

 which we formerly regarded as characteristic of the Tertiary in Brazil 



Fig. 4. The bluff at Cabo Branco seen from the beach. 



has no diagnostic value. So far as I know, the Tertiary heds of this 

 coast are nearly all horizontal, but the horizontal beds are by no means 

 all Tertiary. 



A great many other instances have been observed along the coast of 



