424 THE CRETACEOUS AXD TERTIAKY GEOLOGY 



Brazilian coast. He announces the imiwrtant diseoveiy of secondarv beds at Atalho 

 and Caissara on the S.lo Francisco, above the falls of Paulo Affonso, and expresses 

 the opinion that they extend to the south along that side of the valley. 



These beds are said to resemble those of Bahia, but doubt is expressed regarding 

 their being the same, because the author finds it " difficult to admit the contempora- 

 neous deposition of beds at such ditferent elevations." 



Gardner, George. — Travels in the Interior of Brazil, principally through the Northern Provinces and the Gold and 

 Diamond Districts during the years 1830-1841, by George Gardner, F.L.S., London, 1846, 113-147. There 

 are but few important notes on the geology of Sergipe-Alagoas. On p. 119, he says the rocks at Penedo dip 

 west, which should read east. On p. 198 et scq., he describes the chalk formation of Ceara. This is substan- 

 tially a repetition, with less detail, of the article from the Proceedings of the Glasgow Philosophical Society, 

 of April, 1843, referred to below. 



IIartt, Cii. Fued. — Geology and Physical Geography of Brazil, by Ch. Fred. Ilartt, Boston, 1870. 



This book contains all sorts of valuable scientific information regarding all 

 parts of Brazil. The observations of the wi'itcr, who visited Minas Geraes and the 

 provinces along the coast north of Ixio, are supplemented by a study of almost all the 

 best authorities regarding the gcogi-aphy, geology and natural history of the Empire, 

 so that the work represents, better than any other, the state of knowledge of Brazilian 

 geology at the time of its publication. Following Agassiz, he refers the surface geol- 

 ogy to the glacial drift, gives excellent descriptions of the tertiary at many localities, 

 refers the sedimentary beds of the Abrolhos, and the fresh- water deposits of the Bahia 

 basin to the cretaceous. He touched at Aracaju, Maroim and Penedo, and from 

 Maroiin took away a small collection of fossils, which lead him to refer the rocks of the 

 region to the cretaceous. On pages 555 et seq. he gives a resnm6 of the mesozoic 

 geology of Brazil. The name " Sergipian group " is proposed for the limestones of 

 Maroiin, and the " Cotinguiban group" for the cream-coloi'ed limestones of Sapucaiy. 

 The work is illustrated with many carefully executed wood-cuts, among which are 

 numerous valuable geological sections. 



lIiiNDJ'.usoN, James. — A History of Brazil, by Jiuues Henderson, London, 1831. 



He mentions the occurrence of dints and limestones in the province of Sergipe. 



IIvATT, Ai.i'HF.iia. — Report on the Crelaceous Fossils from Maroim, Province of Sergipe, Brazil, by Alplicus llyiiU. 

 In Ilartt's Geology and Physical Geography of Brazil, p. 38") ct neq. 



Five species of fossils, mostly cephalopods, are described fi-om a collection made 

 at Maroim by Prof. Ilartt. 



Hyatt, I'uOc. Alpheus. — The Jurassic and Cretaceous Ammonites collected in South America by Prof James Orton, 

 with an Appendi.v upon the Cretaceous Ammonites of Prof. Hartl's collection, by Alpheus Hyatt. Proceed- 

 ings of the Boston Society of Natural History, Vol. XVII (May, 1875), pp. 365-373, Boston, 1S75. 



This paper has a brief note upon BucMceras hartlii Hyatt, described by him in 

 Hartt's Geology of Brazil, p. 38G, as Ccrat/ies hartlii. 



