232 RECENT ARCHAEOLOGICAL DISCOVERIES IN CORNWALL. 



established themselves at Tregaer, Nanstallon, where they were in 

 possession of the ford of the river Alan, leading to Boscarne, 

 and were able to control the tin-streamers. 



Assuming that this was their line of invasion, or explor- 

 ation, and that they halted at Tregaer for some considerable 

 time (as seems likely from the numerous interments around the 

 camp, and from the many fragments of Samian-ware left in and 

 near it), we may thus summarize the halting places, and their 

 straight line distances from each other : — 

 From Port Isaac, landing place, to Trevinick Roman \ 



camp, (near the British Round Castle of Tregaer ( li miles. 



in St. Kew) : — ) 



From Trevinick Roman camp to Kelly Roman camp, \ 



(near the British Rounds of Castle Killibury, > 3 miles. 



reached via Penpont) : — ' 



Prom Kelly Roman Camp to Tregaer Roman camp, \ 



Nanstallon, (via Denham's Bridge, Pencarrow, > 4J miles. 



and Boscarne) : — J 



Total distance, Port Isaac to Tregaer, at Nanstallon : — 9 miles. 



Not allowing for extra distances caused by deviation. 



The military force would thus have penetrated from a port 

 on the north coast to the centre of Cornwall, — Tregaer, as we 

 have stated, being in what is now Bodmin Parish, — midway 

 between the harbours of Padstow on the north and Fowey on 

 the south. 



Measuring each way in a direct line, Bodmin itself is 10 

 miles from the sea on both the north and south coasts. 



"We will not attempt to follow "the cohort" further. 



After a protracted halt at Tregaer, the troops may have 

 returned to the place whence they started, or they may have 

 crossed the mainland of Cornwall and taken shipping on the 

 south. Dr. Borlase rightly or wrongly supposed that he could 

 trace part of a Roman road between Bodmin and Lostwithiel, 

 which would lead in the Fowey direction, but I have not observed 

 any appearance of quadrilateral camps in the Lostwithiel and 

 Fowey district. There are a few circular castles there, supposed 

 to be British, and the Giant's Hedge [Roman ?] from Lerrin to 

 Looe. 



