230 THE YORKSHIRE NATURALISTS’ UNION AT AYSGARTH. 
cata, C. precox, C. panicea, C. paludosa, C. ampullacea, C. acuta, 
C. glauca, C. flava, C. sylvatica. 
Mr. John Farrah notes that the following plants were collected | 
that do not appear in Mr. John Percival’s list :— Ranunculus hederaceus, 
Doronicum pardalianches, Humulus lupulus, Salix helix, an 
Bromus erectus. Geranium pheum was reported as a well-established 
garden-escape at Carperby, by Miss Bradley. 
For the Geological Section, in the absence of all its officers, 
Mr. J. G. Goodchild, F.G.S., gave Re report, and the following 
account is supplied by him :— 
The principal object of the Section on the occasion of this visit 
to Aysgarth, was to compare the development of the Lower Car- 
boniferous Rocks of Wensleydale with their equivalent strata in the 
dales to the north. Without entering into details, for which 
reference should be made to the maps and memoirs published by 
the Geological Survey, the nature of the differences between the 
types of rock prevailing in each of these areas may be gathered 
from the following outline of the geology of the district. 
Wensleydale proper consists mainly of Lower Carboniferous © 
rocks, which lie almost horizontally over the greater part of the area. 
What inclination the strata may have over any part of the district is 
generally very small in amount (neglecting the areas around Carperby — 
Scars) ; and may be said to be, in a general way, towards the North | : 
around Hawes, and towards the North-east in the district around 
Aysgarth. The fall of the bed of the Yore from Hawes to Aysgarth 
keeps almost exact pace with the dip of the rocks; so that nearly 
the same strata form the river-bed all the way from the village of 
Hardra to a mile or so below Redmire. To the east of that point 
the rocks dip faster than the fall of the river-bed, so that successively — 
higher strata descend to the Yore as it is followed towards the lone . 
end of the dale. - ae 
The dale may be said to be carried mainly out of a great pile— o 
entne Chacon heeled © 
sandstones, and shales, together with chert beds and coal seams. : : 
All these are of marine origin, and form the Yoredale Rocks se 
Professor Phillipe. This member of the Carboniferous Series can 
be traced without any important break, from Craven, through the — : 
~ north of England, into the basins of the Clyde and the Forth, 
Below the Yoredale Rocks, whose lowest limestone is that of 
‘Hardra Fors, come: : ie. Mountain Limestone, which is so well car . 
oo played around n Ingleborough. In ee oles: its uppermost D 
ce 
sist of thick m ee ee 
alone occur, and the bottom of the valleys 
