CORRELATIONS ' 
The subject of the correlation of the Coal Measures, or Rio Bonito 
Beds of Brazil, with those of other countries, is very fully covered by 
Dr. David White in his admirable paper accompanying this report, 
which leaves little to be added. The writer had arrived at practically 
the same conclusion as Dr. David White before submitting the fossils 
to his critical study, except that it was thought possible, the Rio 
Bonito beds might represent the Permo-Carboniferous or Artinskian 
of Russia which some geologists hesitate to place in the genuine 
Permian. 
The Santa Catharina system of rocks taken as a whole appears to 
represent completely (except that the fossils of the Beaufort series have 
not yet been discovered in Brazil) the Karroo system of South Africa, 
as described by Drs. Corstorphine and Hatch in their recent publi- 
cation (*) on the geology of South Africa. 
The Karroo System is classified ahd subdivided by these authors 
as follows : 
Voleanic beds. . 
Uper Karroo  or\Cave Sandstone . .fZone of the Zunclo- 
Stormberg Series pBed Beds . . . .\ clodonts 
Molteno beds. . 
Zone of the specialized Theriodonts. 
Sandstoneg and shales with Dicynodon. 
Sandstones and shales with Paretasaurus. 
Middle Karroo aie 
Karroo systemM( peayfort Series | 
Upper Sandstones 
and Shales. . 
Lower Karroo or)Dwyka Conglome-\ Zone of the Meso- 
\ Eeea Series. Pal 6 a sw  « saurus . 
Lower Sandstones 
\ and Shales . 
Meters Meters 
Serra geral eruptives . . . 600 
S. Bento Sandstones great 
cliffs of red, gray, and 
ey a cra S. Bento Series, .{ cream-colored sandstones. 200) 900 
Rio do Rasto red beds, with 
fossil reptiles (Scaphonyx) 
and fossiltrees . . . « 100 
(‘) The Geology of South Africa, ay F, H. Hatch, PH. D., M, inst. C. E., 
and C. S. Corstorphine, B. SC., PH. D., London, Macmillan & Company, Li- 
mited, 1905. 
