2Q2 T. RUPERT JONES [march 1899 



morainic fringe of which the Dwyka Conglomerate remains in evidence, 

 Palaeozoic and Archaean rocks must have pre-existed, and have been 

 covered up and worn down by the glacial covering. And of its 

 scrapings, scorings, and smoothings, evidence doubtless still exists 

 among their hills, valleys, and gorges, their krantzes, kloofs, and 

 poorts in that maritime region, including Namaqualand, Clanwilliam, 

 Malmesbury, Swellendam, George, Kuysa, and their neighbouring 

 divisions, except where obliterated by subsequent weathering. 



Some of their morainic materials may have been left as terminal 

 like the Dwyka band, or as local belts during retreat, like those seen 

 in the Zwarte Rug of the Cold Bokkeveldt, and in the Witteberg, in 

 Cape Colony, and in the Zuurberg in Albany, and near the coast in 

 Zululand. 



Some of the memoirs more particularly treating of the Dwyka 

 Conglomerate : — 



A. G. Bain, Trans. Gcol. Soc, 1845, ser, ii. vol. vii. part ii. p. 54 ; and 1856, part iv. 



p. 185. 

 A. Wyley, "Notes on a Journey in Two Directions across the Colony," 1859. 

 P. C. Sutherland, Quart. Journ. Geol. Soc, 1870, vol. xxvi. p. 514. 



C. L. Griesbach, Quart. Journ. Geol. Soc, 1871, vol. xxvii. p. 58. 



G. W. Stow, "The Backhouse and Douglas Boulder-drift and Olive Shales," Quart. Journ. 



Geol. Soc, 1874, vol. xxx. pp. 599, 634, etc. 

 E. J. Dunn, "Report on the Camdeboo and Neuweldt Coal," 1879. 

 A. H. Greex, Quart. Journ. Geol. Soc, 1888, vol. xliv. pp. 241 ct scq. 



D. Draper, Quart. Journ. Geol. Soc, 1894, vol. 1. p. 559. 

 Trans. Gcol. Soc. S. Africa, 1896, vol. i. pp. 90, etc. 



G. A. F. Molengraaf, Trans. Gcol. Soc S. Africa, 1898, vol. iv. pp. 103-115. 



17 Parson's Green, London, S.W. 



