200 



conglomerate, and collected in the dark limestone some foraminiferal remains ; 

 it is stated that Schwager took notice of them as representing a new genus 

 closely allied to Sc/ni<agv7-inaP The details of the foraminifera are, how- 

 ever, nowhere given by Schwager or by Lorenthey ; but it seems to me 

 almost incredible that a type of foraminifera very like Schiwager/na ever 

 existed in the Lower Carboniferous time. If the assumption concerning 

 the stratigraphical correlation of the coralline limestone, advanced above, is 

 taken into consideration together with this account on the foraminifera con- 

 tained in the same limestone, then we find that the Lower Carboniferous age 

 of the said rock is by no means free from doubt. 



10-13. There are a number of coalfields in the vicinity of Tshung-king-fu^' in 

 the southern part of Sze-chuan ; the coal bearing series intercalates also 

 marine sediments, limestone and other clastic rocks, and the fossils found 

 by Cremer in these marine sediments are regarded by Frech*^ as indicating 

 Lower Carboniferous age. Cremer noticed at Ban-dji-kou^^ (10) 15 li 

 SSE of Nan-tshwan,'' the following rock-succession, in descending 

 order : 



Hard, compact dark bluish limestone with Productus plicatilis Sow. 

 Soft, yellowish sandstone with Product us sciiiircticulatus Flemm, P. 

 plicatillis Sow., OrtJiotJutis crcnistria Phill., O. radialis Phill. 

 10 cm. thick. 

 Hard, bluish crystalline limestone. 40 cm. thick. 

 Reddish brown shale. 10 cm. thick. 

 Reddish brown shale, with ferruginous nodules. 

 Rocks unexposed. 20-30 cm. 

 Shale with strings of py rite. 

 Coal seam 1.36 m thick. 

 . Shale. 



Hard grey limestone. 



1) Loczv: in Wiss. Ergeb. d, Reise p. Grafen B. Szfckenyi, vol. I., p. 355. 



2) Tshung-king-fu=3!Sffi" 



3) Frech: in Richthofkn's China, vol. V., pp. S[-S6. 



4) Ban-dji-kou = Chinese characters unknown. 



5) Nan-tschwan^^/lj 



