606 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 22, 
side of Glencoin Park, there comes on a well-marked band of slates 
and ashes, the inclination of which appears to be northwards. This 
would render it probable that the synclinal axis which crosses the 
vale of St. John is prolonged eastwards as far as Dockwray ; but 
there are no signs of these slates to the north of Dockwray. 
V1. Lower portion of the Green-slate Series in Eycott Hill. 
Leaving the main area of the Green Slates and Porphyries for a 
moment, an excellent exhibition of the lower part of this group is 
afforded in a rugged hill, known as Eycott Hill, about a mile and a 
half to the north of Troutbeck Station. North of Troutbeck Station 
for some distance the country is undulating and moory, and the 
stream-sections exhibit nothing but drift. There can be no ques- 
tion, however, that this area is occupied by the Skiddaw Slates, since 
these are seen close to the Station, striking in this direction, and 
dipping N.N.W. at 50°. When Greenah Moss is reached, 2 low 
range of craggy hills commences, trending N.W. and S.E. These 
are composed of green slates and porphyries, which begin near 
Greenah Crag, rise in the centre into Eycott Hill (1131 feet), and 
sink again towards Murrah. 
The general structure of this range is well exhibited in a little 
stream which flows down from Kycott Hill, and which displays the 
following sequence of beds in ascending order :— 
1. Bedded felspathic ashes, 3 or 4 feet in thickness. 
2. A porphyritic trap, containing small crystals of felspar, about 
20 feet. 
3. Bedded felspathic ashes (about 15 feet), dipping N.E. at 30°. 
4. A magnificent bedded amygdaloidal and porphyritic trap, 
sometimes rudely columnar. The base of this beautiful rock is 
composed of fine-grained dark-green matrix, with numerous specks 
of hornblende. Scattered through this are very numerous and large 
crystals of a light-green or olive-coloured felspar, the length of 
which varies from + up to as much as 3 aninch. The whole rock 
exhibits also a considerable number of amygdaloidal cavities, some 
of which are filled with cale-spar, whilst others contain silica in a 
form nearly approaching to opal. Some of the larger vesicles are 
filled centrally with cale-spar, with an outer covering of chalcedony. 
5. Compact felspathic trap, dark green in colour, and containing 
many long crystals of glassy felspar. 
6. Ashy beds, in part conglomeratic, with pebbles of trap. 
7. Amygdaloidal ashes, the cavities of which are sinuous and 
drawn out, and are filled with chalcedony, calc-spar, or some horn- 
blendic mineral. The matrix of these beds appears to contain a 
small quantity of carbonate of lime, as it effervesces slightly with 
acids. 
8. A series of bedded felspathic traps, usually containing nume- 
rous minute crystals of felspar. 
The further sequence of the rocks in this section is now hidden 
by the Scar Limestone, which comes on close to the road between 
Berrier and Murrah. The entire length of the section is little short 
