of Devonshire and Cornwall. 123 



vlan) and the other actlnoHte. Both had been given to him as hav- 

 ing been found on Dartmoor. 



From Launceston to Bodmin the distance Is twenty miles, and 

 between these towns, the highest part of the county of Cornwall 

 intervenes. In the course of this tract of country, we quit, and 

 again enter upon the grauwacke formation. It is exactly at the dis- 

 tance of seven miles and a quarter from Launceston, that it is lost at 

 a height of nearly eight hundred feet above the level of the sea : the 

 nearest village to this place is called Five Lanes. Here the grau- 

 wacke is succeeded by a granitic plain, where several rivers, flowing 

 to the right and left, have their source : the Inny, the Fowey, the 

 Camel or Alan, &c. 



Brown Willy and Rough Tor do not rise much above their base, 

 not more than other hills of much less absolute height, which are 

 seen in the horizon. The grauwacke is again found exactly at the 

 fourth mile stone from Bodmin, very near New London ///;/, at a 

 height, which upon that side of the chain appeared to me consider- 

 ably greater than upon the northern side, but I was not able to 

 determine the point more accurately. The land afterwards falls with 

 a rapid descent to Bodmin, which is only one hundred and eighty- 

 eight feet above the level of the sea. The soil of that granitic ridge 

 is boggy, and quite like that of Dartmoor Forest. 



From Bodmin to Truro, by the Indian Queen and St. Michael, Is 

 twenty-two miles : the grauwacke formation continues the whole 

 way, becoming more slaty as we approach Truro, that is to say, as 

 we get lower down. It then very nearly resembles clay-slate. The 

 most elevated point on this road, and from which the whole of the 

 Bristol Channel may be seen, is in the neighbourhood of St. Michael. 

 From that place to Truro, the vegetation is very luxuriant, but from 

 St. Michael to the Indian Queen, and from thence to within three 



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