sp:cretary's report. 
501 
admired. As the hill was ascended the party had the opportunity 
of examining a fine series of lavas, probably of the age of the Borrow- 
dale Series, some pink, some greenish, and containing large crystals 
of felspar. From the summit a fine view was obtained of the base- 
ment Carboniferous beds of Mell Fell resting on the Borrowdale Series. 
The Caldew Valley was ascended to view the contorted and meta- 
morphosed Skiddaw Slates, and to examine exposures of the granite 
and greissen. Returning over Carrock Fell, the diabase, grano- 
phyre, and gabbro were examined, and the party descended at Stone 
End. The gabbro of Carrock Fell contains many fragments of Eycott 
Hill rock, into which it was intruded. The composition of this rock 
varies considerably, at the centre there being about 60 per cent, of 
silica, with about 5 per cent, of the oxides of iron and titanium. But, 
as one proceeds outwards, the percentage of these bases rises steadily 
and the silica falls, until the proportions become about equal at the 
borders of the mass. 
On Tuesday the party drove from Keswick through the Vale 
of Naddle. Junctions of the Skiddaw Slates and Volcanic Series 
were examined at the foot of Nest Brow, near Causeway Foot. Well- 
preserved roches moutonnees were seen in St. John's Vale and a quarry 
in an old volcanic neck at Bridge End, close to Thirlmere Dam. The 
party then drove along the eastern side of Thirlmere to the top of Dun- 
mail Raise, where several examples of drift mounds were examined. 
The fine view over Grasmere was duly admired, and the origin of the 
gap called Dunmail Raise was eagerly discussed. The return journey 
was by the western side of Thirlmere to Armboth, and specimens 
of the Armboth Dyke were secured. Shoulthwaite Gill was then 
ascended, and some bedded ash beds with faults were well seen near 
Iron Crag. From Shoulthwaite the conveyances took the party back 
to the Kes^vick Hotel, and so finished a most inspiring and instructive 
field excursion, and the earnest thanks of the members were voted 
to Messrs. J. Postlethwaite, F.G.S., and P. F. Kendall, F.G.S., for 
their excellent arrangements and admirable leadership. 
The Second General Meeting and Field Excursion was held at 
Leyburn, from July 2Gth to 29th, for the investigation of Wensley- 
dale, with the special view of examining the typical Yoredale Beds of 
