OF THE SERGIPE-ALAGUAS BASIN OF BKAZIL. 411 



ance does not conflict in any respect with the idea of unequal elevation, for this eleva- 

 tion would need to be very unequal indeed to make itself perceptible to the unaided 

 eye* 



All of the little evidence we have seems to suggest the identity of the coastal 

 with the inland beds — certainly it does not suggest any obstacle to their correlation. 



Agassiz pronounced the fossil fishes, collected by Gardner, cretaceous, while 

 Xewberry and Cope believe them to be of Jurassic age. Dr. White pronouncLS the 

 majority of the Sergipe-Alagoas fossils to be cretaceous, though he and Prof. Hyatt 

 declare many of them to have a Jurassic aspect. If these facts suggest anything in 

 regard to the relations of the rocks to these localities, it is that the probabilities favor 

 theii-, at least, ai)proximate identity. While I cannot, of course, maintain this corre- 

 lation, I must, at least, dissent from a separation without better evidence than has 

 thus far been adduced. 



*S«e G£ulogie du BresU, par EmniADuel Liais, p. 249. 



