IIUBIDQE — HOCKS IN THE CAPE TOWN DISTRICT. 3G7 



show) of that of the Kromme and Kabcljouw rcf^ion with those of 

 the Zwartkops heights, and tlience to the Eisli Kiver. Still, ]\lr. Bain 

 is too able a man, and has generally too good reason for what ho docs, 

 for any opinion of his to be passed over liglitly. My own obscrx a- 

 tions extend no further westward on this part of the coast than the 

 region just mentioned; but as 1 think I can show that the relative 

 positions of the quart/ite mountain-ranges with the slate plains and 

 valleys, clearly refer both to the like formations in the west, and as 

 1 have fossil and other evidence of their identity with the rocks fur- 

 ther east, I will describe this region more fully. 



The Kromme (winding) river runs for some miles from its source 

 through a quartzite range, some few strata of slate here and there 

 appearing in its bed ; as, for instance, at the spot marked A in the 

 sketch, where the slate contained vegetable stems. The main direc- 

 tion of the range, Cougha and Baviaans Kloofbergen, is about north 

 80° east. It sends off a branch, the Zitzi Komma (sometime called 

 Kromme) heights, to Cape St. Francis, in direction north 41° west : 

 another, some of the spurs of which skirt Ilermansdorp and ITankey, 

 the main direction being north 79° west. Thus these ranges diverge 

 at an angle of about 35°; but, taking the spur, it would be nearer 

 60°. The Cougha bergen are, perhaps, 1500 to 1800 feet high ; the 

 Zitzi Komma 1000 to 1300. They are of quartzite sandstone of va- 

 rious degrees of hardness and crystalline character, often saccharine, 



-3.FRAN CIS 



Plan or Country akound St. Francis Bay.* 



A. Spot iu the Kromme river wlicre fossils were Ibuiul. B. Devonian 

 fossils near this spot. C. Devonian fossils at llermansJoi'p. 1). De- 

 vonian fossils at Kabcljouw river mouth. 



sometimes ivory-like. The line subtending this angle, drawn from 

 near the mouth of the Kromme to the most eastern portion of the 

 Gamtoos hv\i)\v llaiikc^y, woidd ])ass over scarce anything but slate; 

 with a sh'ght curvaiui'e it would pass over no quartzite. As the 

 strike of the slate is north (50° west, and the lino ncarU 15 miles long 

 and making but a small angle with it, I believe tlie line would cross 

 1:^ miles of the strike. Th(> dij) ofthe rocks is considerable here; so 



* The strike is too near perjjendieular to (he range of mountains, ami the two i-anirert 

 should liave diverged at right angles. 



