PROCEEDINGS OF GEOLOGICAL SOCIETIES. 
both the inclined and horizontal portions not presenting any evidence of a diffe- 
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, and thus rendered in appearance only identical. 
Taking this view, he considers tliat the inclined quartzite is a coraformable suc- 
ccssional 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 River 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 Cape are not divisible from the schists of the Bok- 
keveld, but are to be linked to them by the intercalated quartzites described in this 
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 tlie Cape Colony, Dr. Rubidge thinks that a similar 
condition of silification exists in the Zuurberff range, although no overlying 
horizontal sandstones are there seen. He describes in detail a section made by 
liiraselfand Mr. R. Pinchin, along the road from Port 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 feldsp-ithic beds dip 
from the other side of the Zuurberg, in an opposite direction. Similar beds continue 
■with diminishing dip as far as Vander 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 southerly dip, 
and probably abutting uncomformably against the schists near Callaghan's Inn. 
This 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 intcrbedded 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. 
Kubidge notices that some members of the two formations resemble each other so 
strongly that sometimes it is difficult to distinguish between them. 
Tbe plant-beds above referred to contain innumei-able obscure vegetable frag- 
ments, like those of stems, reeds, &c., and in the rocks at Gower's, on Bushman's 
River, Dr. Rubidge h*s seen, besides fragmentary vegetable remains, some fine 
jointed stems. 1'he plant-beds of the Karoo beds, at Bloemkop, contain two or 
more kinds of Glos?opteris, 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. 
'WARwiCKSHinF, Naturalists' Field Club. — The Warwickshire Naturalists' 
and ArclisEologists' Field Club have held four very successful and agreeable 
meetings during the present year, and it is gratifying to note both the rapidly 
