192 PROCEEDINGS OP THE GEOLOGICAL SOCIETY. [NoV. 3, 



On the northerly or left bank, on the hill- side above the Logan- 

 stone, a short distance below Hunt's Tor, there is a bed of fragments 

 of Carbonaceous rocks that have fallen from above, and granite- 

 veins occasionally occur amongst these portions, showing that a 

 vein probably exists in that locality. A little lower down the 

 stream turns to the south, and shortly turns again eastwardly. The 

 hill-side from near this last turn to some bold cliifs, known as 

 Sharpy Tor, about a quarter of a mile lower down the valley, is 

 seamed with veins of granite. On account of the depth of soil, and 

 the vegetation, they can rarely be traced for more than a few yards, — 

 they do not appear, except in one case, in the cutting for the walk 

 at the top of the hill, — and they have not been noticed on the north 

 side of the hill or at the Drewsteignton Quarries. The veins throw 

 off branches into the adjoining rock, and vary in thickness from a 

 thin filament to a breadth of about 18 feet. In the small veins the 

 granite is very hard and close-grained ; in the 18 -feet vein it is of a 

 larger grain, and the felspar is often of considerable size : the veins 

 contain portions from the adjoining Carbonaceous beds, sometimes so 

 slightly removed from the original position that it can be traced ; in 

 the large veins some of these masses are rounded, as if they had 

 undergone attrition, but some (about a cubic foot in size) still preserve 

 their angularity. This wide vein is very conspicuous, and can be 

 traced for a considerable distance up the hill- side. The strata ad- 

 joining the veins are not contorted or thrown violently out of posi- 

 tion by the intrusion of the granite ; the displacement would probably 

 not be noticed by a general observer, and presents an appearance 

 such as would be caused by a continuous strong pressure. 



Below Sharpy Tor, granite-veins have not been noticed on the left 

 bank of the river. On the right bank at the most northerly part 

 of Whyddon Park near the gate leading into the Moreton Woods, 

 at the turn in the river below the Logan-stone before mentioned, 

 many scattered blocks of Carbonaceous rocks traversed by granite- 

 veins occur ; the rocks are not well exposed, and one granite-vein 

 only has been found in situ. The depth of the soil and the vegeta- 

 tion prevent the examination of the strata on this bank of the 

 Teign. 



To the south of the Teign, two narrow veins of granite, having a 

 direction from N. by E. to S. by W., cross the road from Cranbrook 

 Castle to Fingle Bridge ; and a vein of granite, about 19 inches in 

 width, having a direction from N.E. to S.W., in the same vicinity, 

 crosses the road when descending the hill to the west of Cranbrook 

 Farm. The open country to the north of Willistone (about half a 

 mile to the east of Cranbrook Farm) is strewed with blocks of 

 granite and Carbonaceous rocks, the latter for the most part much 

 altered and siliceous, and in these scattered rocks veins of granite 

 occasionally occur ; the rocks here are rarely exposed in situ, and the 

 places from whence these veins are derived have not been discovered ; 

 but there seems to be every probability that they are in the imme- 

 diate neighbourhood. Mr. Ormerod has not examined the junction 



