THE MOORLAND PLYM. 
291 
The actual length of the main river above Shaugh Bridge is 
seven and five-eighths miles, and the various tributary streams add 
as follows. On the south side : 
Dunstone Brook a quarter of a mile. 
Blackabrook seven-eighths of a mile. 
Spanish Lake three-quarters. 
Hentor or Wallabrook one and an eighth. 
Shavercombe one and three-sixteenths. 
Langcombe Brook one and a quarter. 
Calveslake one-eighth. 
On the north side, starting as before from Shaugh Bridge : 
Brisworthy Brook three-eighths of a mile. 
Legis Lake three-quarters. 
Meavy Pool one-eighth. 
Drizzlecombe one mile. 
Evilcombe one-eighth. 
And another a little above Evilcombe also one-eighth, making 
the total length of main tributary streams eight and one-sixteenth 
miles; while the river and tributaries taken together amount to 
about fifteen and three-quarter miles. 
In the foregoing list most streams worthy of the name have 
been included; but in rough weather or flood -time the length 
would be considerably increased. 
It will be seen that the southern tributaries not only outnumber, 
but are individually much larger than, the northern. 
With the exception of a small portion of its course, near Dits- 
worthy, the river runs for almost its entire length through granitic 
formations ; but at Ditsworthy a patch of altered slate overlies 
the granite, and stretches across the valley. 
SHAVERCOMBE. 
Shavercombe brook, which joins the Plym near this point, 
runs for a considerable distance over a slate bed. 
As a result the Shavercombe valley presents a singular contrast 
to the surrounding scenery. The stream has hollowed for itself 
a deep gorge with fairly precipitous sides, and terminating at its 
higher end in a cliff of slate rock about twenty feet high, over 
which in wet weather the brawling little torrent hurls itself im- 
petuously, only to be received in the deep pool below ; here, after 
