PRE-DEVONIAN ROCKS OF THE MENDIPS AND THE BRISTOL AREA. 291 



the trench S.E. of Crockley's Farm shows little patches of a colourless 

 mineral, apparently chalcedony, sometimes scattered through the body of 

 the rock, sometimes partially filling vesicles, and giving a singularly perfect 

 black cross under crossed Nicols. 



Topographical and Geological Te^-ms used locally in South Africa. — 

 Repo^i of the Committee, consisting of Mr. G. W. Lampliigh 

 (Chairman), Dr. F. H. Hatch (Secretary), Dr. G. Corstorphine, 

 and Messrs. A. Du Toit, A. P. Hall, G. Kynaston, F. P. Men- 

 NELL, and, A. R. Rogers, appointed to determine the precise 

 Significa^ibce of Topographical and Geological Terms used locally in 

 South Africa. (Brawn up hy the Secretary.) 



During the year a long list of terms, mainly of Dutch origin, was received 

 from Mr. A. Du Toit. This list contained contributions from Mr. A. R. 

 Rogers. A list of words was also received from Mr. Kynaston and a 

 small one from Mr. F. P. Mennell. A few definitions have been con- 

 tributed by Dr. Hatch. 



Two classes of words are at present being catalogued : — 



I. Topographical terms. 



II. Names of rocks and minerals. 



Most'of the words hitherto catalogued are of Dutch origin, but some 

 Kaffir and Bushman words have also been included. It may be found 

 desirable to extend the scope of the Committee to other parts of Africa, 

 and suggestions will be welcomed. 



Class I. — Topographical Terms. 

 Aar — 



Is the name given to any feature on the surface which is very long compared 

 with its breadth. Applied to the outcrop of a dyke, to a low ridge of tufa, 

 to a slight depression, or most frequently to a line of country characterised 

 by a particular kind of bush. 



Baai — 



A bay on the coast, e.g., Saldanha Baai. 



Bak— 



A basin or basin -shaped hollow. 



Bank — 



A low ridge rising suddenly, e.g., Vaalbank. 



Banken, plural of Bank — 



A term] used to denote a step-like feature, hence banken type of scener)', 

 e.ff., in the high veld portion of the Lydenburg district of the Transvaal, 

 due to alternations of harder and softer beds with a low dip. 



Berg — 



Mountain: the term' ''de' Berg' is especially applied to the great eastern 

 escarpment of the Transvaal plateau. 



Bosch — 



Bush or wood, e.g., Blaauwbosch. 



U2 



