168 Messrs. Von Oeynhausen and Von Dechen on the 



granite, of a reddish colour, A row of rocks, from [e) to (/"), 

 runs out from the shore into the sea, consisting only of granite 

 and greenstone ; the cliffs do not show any thing else than 

 serpentine. Both rocks enter the cliffs at the point {/), and 

 appear to continue further. 



A vein of granite, six feet wide, appears in the cliffs near {g); 

 it is of the same nature as the granite of Gew Grease (fig. 13). 

 A great many strings of asbestus there intersect the serpen- 

 tine. Veins of steatite are in both walls of the granite. Another 

 granite vein (fig. 14.) more remarkable, occurs near {h) ; at the 

 bottom it is six feet wide, higher up less wide, so that its termi- 

 nation is very distinct: steatite continues to fill the vein in the 

 upper part ; but this also ends, before it reaches the surface, 

 in a mere string ; the total height of the rock may be nearly 

 sixty feet. A vein of steatite one foot and a quarter wide starts 

 from this vein ; it lies nearly horizontally, and may be traced 

 to a distance of thirty or forty paces without meeting with the 

 end of it. This vein is heaved twice by strings filled only with 

 earthy talc. Veins of asbestus, commonly the last ends of veins 

 of steatite, are found very frequently. A vein of granite and 

 greenstone occurs at (f), of a width more than eight or ten feet. 

 A granite vein three feet thick is found near {k) ; it appears to 

 intersect the country in a position nearly horizontal. All these 

 veins may be said to start out from the mass of granite and 

 greenstone, which forms the rocks in the sea from {e) to {/). 

 The number of granite veins which are found in the serpen- 

 tine between the shore and the village of Gwendra is very 

 great. 



Between Gwendra and Coverack, which is about six miles 

 distant, occurs the junction of the serpentine and the gabbro. 

 The whole country is covered with large blocks of the latter 

 rock, the white appearance of which shows from a distance the 

 line of junction between both rocks. These rocks are like 

 those found at the Baste in the Hartz. 



VII. Cligga Point. — Cligga Point is situated a couple of 

 miles to the north-east of St. Agnes. From this town to the 

 promontory occurs nothing else but fcillas. Near to the pro- 

 montory at {a) fig. 16. is found a rock, which may be considered 

 as a kind of granite ; it chiefly consists of quartz, which fre- 

 quently occurs here in double six-sided pyramids. Felspar 

 and mica occur only in a small proportion in it, but schorl is 

 more abundant. This rock is decomposed near to the surface ; 

 the crystals of quartz cover the surface ; but at some depth it 

 becomes harder, and it is a well pronounced granite at the 

 point {h) ; felspar occurs more frequently in it, partly in a fresh 

 state, partly decomposed into China clay. Rocks of granite are 



to 



