178 



Mr. Bain on the Geology of Southern Africa. 



DIAGRAM OF THE STRATA 



_>v_ 



in the 



Western Part of the 



Colony. 



iia the 



Eastern Part 



(North of Albany). 



in the 

 District between the Great 

 Fish River and the Gam- 

 Toos River (Albany and 

 to the W.S.W.). 



< — 



Reptiles, silici- 

 fied trees, thin beds ^ 4 

 of coal. 



Reptiles, Bi- 

 valves, Asterophyl- ^ 3 

 lites,Lycopodiuin ' 



Plants and silicified 1 „ 

 trees. J 



Plants. 



Claystone porphyry . . . 



Fissile slates and .. 

 sandstones (fossils I q 

 as in the lower | 

 beds. ^ 



Coarse red sand- 

 stone and conglo- 

 merate. 



Micaceous sandstone . 

 (Tlilobites and Mol- k 

 luscs) J 



Blue argillaceous j 



scbists(Trilobiresand r 

 Molluscs). 



Greyish sandstone ) 

 (Spirtfers). j" 



Micaceous sandstone ^ 

 {Trilobites, Crinoids, V 

 Bellerophon ) - ^ 



Sandstone and Con- 

 glomerate 



Clayslate & Gneiss . 



Sandstones and 

 blue slaty bed.s 

 with calcareous 

 nodules. Green- 

 stone, &c. 



^^~]lI*'ort Beaufort 

 Grit. 



-^~.o Jurassic. (Tri- 1 



S gonia,Gryphiea, t 



i ^, ■ Ammonites, &c. f 

 E'3 gj Ferns, &c.) 



= Conglomerate . . 



Carboniferous '! 



Red and grey 



sandstones 



I'Lepidodendron). 



