370 THE CRETACEOUS AND TERTIARY GEOLOGY 



White's jiaper, the delay in its printing was veiy tedious, the report having been 

 issued four years after the manuscripts and drawings were prepared. Second, I ha\ e 

 delayed on account of the incompleteness of my observations, and because of my 

 hesitation lest I should add to that class of writings upon Brazilian geology which is 

 made up, to so great an extent, of generalizations based upon very limited observa- 

 tions. A third reason for delay has been the somewhat vague hope that I might yet 

 have an opportunity of completing my studies. As time goes on, however, the proba- 

 bility of my being able to revisit the provinces of Sergipe and Alagoas appears to 

 lessen rather than increase. Since my exploration in those provinces I have returned 

 to Brazil three times, but as Aracaju and Penedo are small ports off the principal 

 lines of travel, visited only by sailing vessels and small coasting steamers from Bahia 

 or Pernambuco, I have never found it possible to make further examination of the 

 geology of this interesting region. It is hoped, however, that these notes may 

 be of service to those who may hereafter undertake to add to or finish the work 

 begun. 



Mucli of this i>aper must be of a statistical nature, for the relation of facts to 

 each other, except in a general way, is not understood, and I do not deem it necessary 

 or discreet to enter upon the discussion of these relations in detail until more thorough 

 information is had of the region in question. 



The sketch map accompanying this paper makes little pretension to accuracy 

 and is only introduced for the pui'pose of giving some idea of the geography of the 

 region under discussion. 



The defects of the records are quite evident to myself, but in spite of such de- 

 fects, I am confident that the facts presented will be useful to those who may here- 

 after have occasion to do work in this region. As far as I am av/are, no geological 

 work has been done here since 1876, if I except the trip made up the Eio Sao Fi-an- 

 cisco by Mr. Derby, the geologic results' of which were published in the Archivos do 

 Museu N'acional, Vol. IV, p. 87 et seq., but this paper, while it treats somewhat of 

 the mesozoic geology of the region, does not appear to represent any new work 

 thereon. What 1 have to say in this paper is upon my own authority, except where 

 others are quoted and credit given. 



I should be remiss in a most pleasant duty did I not refer here to the universal 

 encouragement which the naturalist, traveler, or stranger moets at the hands of 

 Brazilians in all parts of that countrj^, and especially in the provinces of Sergipe and 

 Alaguas. The pooi-est laborer kindly and i)olitely urges you to " make no ceremony " 

 about sharing his humble iare, while the richest gentleman assures you and makes 

 you feel that his house and his servants are " yours " indeed. I am under especial 



