PROCEEDINGS OF GEOLOGICAL SOCIETIES. 



both the inclined and horizontal portions not presenting any evidence of a diflfe- 

 rence in dip beneath the two portions of quartzite ; and he suggests that the 

 inclined beds of quartzite have nothing to do with the horizontal quartzite except 

 that, being immediately beneath the horizontal siliceous beds, they have, by some 

 means, been silicified from above, a,nd thus rendered in appearance only identical. 

 Taking this view, he considers that the inclined quartzite is a comformable suc- 

 cessional portion of the schists and slates ; the horizontal sandstone being of 

 younger age than any of the schists or slates, and extending over them from Table 

 Mountain to Orange P»,iver on the west, and to George on the east. On the north 

 the schists are known to be of Devonian age by the fossils of the Bokkeveld, and 

 the recent discovery of a few trilobites and spirifers at some spots in the slates of 

 the southern districts of the Cape, near Cape St. Francis, at Klein Win- 

 terhoek, and near JefFery's Bay, are considered by the author as corroborative of 

 his view that the slates of the ('ape are not divisible from the schists of the Bok- 

 keveld, but are to be linked to them by the intercalated quartzites described in tiiis 

 p;irtion of this paper ; the schistose rocks of Ceres, Cape Town, and Malmesbury, 

 (Silurian and carboniferous ? of Bain) having generally a similar strike and dip. 



In the Eastern Province of the Cape Colony, Dr. Rubidge thinks that a simihir 

 condition of silification exists in the Zuurbero range, although no overlying 

 horizontal sandstones are there seen. He describes in detail a section made by 

 himself and Air. R, Pinchin, along the road from Fort Elizabeth to Somerset, which 

 shows the inclined schistose beds, intercalated with a band of dark feldspathic rock 

 (the claystone-porpbyry of Bain), lying conformably on and passing into the 

 quartzite of the Zuurberg on the south, and, after some great flexures of the 

 quartzites, a similar series of conformable schistose rocks and feldspathic beds dip 

 from the other side of the Zuurberg, in an opposite direction. Similar beds continue 

 with diminishing dip as far as Vandev Merwve's River, whence they rise again to the 

 north to beyond Bushman's River (at Gower's), a little beyond which thefeldspathic 

 band again appears intercalated with them. The section then becomes obscured, 

 until the Karoo beds are met with near Brak River, having a slight southei'ly dip, 

 and pi'obably abutting uncomformably against the schists near Callaghan's Inn. 

 1'his section differs in some important features from that published by Mr. Bain 

 of the same district. 



Dr. Rubidge considers that the slaty beds flanking the Zuurberg on either side, 

 and forming the synclinal trough at the Vander Merwve's River, are of the same 

 age as the quartzites of the Zuurberg, which are, in his opinion, silicified by 

 metamorphic influences : the interbedded feldspathic rock may also, in his opinion, 

 be possibly of metamorphic origin 



The author follows up his argument by reference to other parallel sections, and 

 regards the plant-beds of Ecca, as well as those of the Great Fish River and the 

 Vander Merwve's River, as being of Devonian age, and not belonging to the lower 

 Karoo beds regarded by Mr. Bain as having a more southerly extension. Dr. 

 Rubidge notices that some members of the two formations resemble each other so 

 strongly that sometimes it is difficult to distinguish between them. 



The plant-beds above referred to contain innumerable obscure vegetable frag- 

 ments, like those of stems, reeds, &c., and in the rocks at Gower's, on Bushman's 

 River, Dr. Rubidge has seen, besides fragmentary vegetable remains, some fine 

 jointed stems. The plant-beds of the Karoo beds, at Bloemkop, contain two or 

 more kinds of Glossopteris, very similar to those of the plant-beds of Central India 

 and Bengal. Amongst the fossils sent by Dr, Rubidge, are several fossils from 

 the Zwartzkop, and from the mouth of Sunday River; amongst the latter are some 

 Belemnites and Hamites, probably of cretaceous age. 



A large series of specimens from the Zuurberg and Vander Merwve's River 

 accompanied this communication ; and Dr. Rubidge also sent a series of fossil 

 plants from the Dicynodon or Karoo beds of Bloemkop, with which Mr. C. J. 

 Powell, of Graaf Reinett, had supplied him. 



Warwickshibe Naturalists" Field Club. — The Warwickshire Naturalists' 

 and Archaeologists' Field Club have held four very successful and ngreeable 

 meetings during the present year, and it is gratifying to note both the rapidly 



