1878.] 855 {RatMbun. 



shales with Spiropliyton. (Derby.) Shales with Spirophyton near 

 Ifaituba, Tapajos, and without fossils on the Xingii, possibly belong 

 to the Devonian. To the north of the Amazonas the Devonian form- 

 ation has been doubtfully traced as far west as the Rio Negro. (Rod- 

 riguez and Derby.) The Palaeozoic fossils from the interior of Pa- 

 rana are either Devonian or Carboniferous. 



Carboniferous. — The large area underlaid by this formation on the 

 Amazonas, was in part marked out in the preceding pages. Carbon- 

 iferous rocks have been found on the Rio Negro and doubtfully in the 

 province of Maranhao. In southern Brazil the extent of the depos- 

 its of this age is very great, ranging through Sao Paulo, Parana, 

 Santa Catharina and Rio Grande, and containing numerous seams of 

 coal. Fossils are abundant in some places. 



[The partially metamorphosed deposits, forming the Serra of Ita- 

 byana and other neighboring serras, are probably Palaeozoic. They 

 overlie the gneiss unconformably: other more or less metamorphosed 

 deposits have been referred to the Palaeozoic] 



Triassic (?). — - Extensive series of sandstones overlaid by trap on 

 the Serra of Sta. Catharina, and inland toward the Rio Parana. Also 

 doubtfully found in Sergipe. 



Cretaceous. — Rio Purus, Upper Amazonas; sandstones overlying 

 the Devonian of Erere, with dicotyledonous leaves, probably Creta- 

 ceous; Braganza, province of Para, discovered by Snr. Penna; Ceara; 

 skirting the coast from near the city of Pernambuco to Parahyba do 

 Norte; Province of Sergipe near the sea-coast ; Rio Sao Francisco, at 

 several localities.; Bahia de Todos os Santos; Abrolhos Islands, etc. 

 It is possible that the Jurassic period is represented at some of the 

 above localities. 



Tertiary, with fossils on the Rio Maranon, and possibly at other 

 localities; also the unfossiliferous deposits before enumerated. 



Post Tertiary. — Lagoa Santa; interior of Bahia; Espirito Santo, 

 etc. 



Drift. — The glacial drift is probably limited to southern Brazil. 



In addition to the voluminous reports prepared by Prof. Hartt as 

 chief of the Brazilian Survey, he also had the following works, 

 which were written before he went to Brazil in 1874, nearly or quite 

 ready for publication. 



I. Brazilian Antiquities — about 500 pages, 4to, with about 50 

 heliotype plates and many engravings. 



II. Mythology of Brazilian Indians — about 300 pages, 4to. 



