130 
secretary's report. 
The party drove on Friday from Middleton to High Force, 
where the sections of the Whin Sill and of the underlying lime- 
stones were examined. Here several thin beds of carboniferous 
shale lying within the mass of the dolerite were seen, and speci- 
mens of these shales, which are highly altered, were taken for 
subsequent microscopical examination. A walk along the bed 
of the Tees above High Force, during which several ex- 
posures of the Whin Sill were examined, brought the members 
to an exposure of Skiddaw slates, which lies on the bank 
of the river at the foot of Cronkley Scar. The rocks were 
found to be highly contorted, and to be penetrated b}- dykes 
of mica-trap. 
Cronkley Gorge was then traversed, several glacial moraines 
being seen on the way, and an examination of the basement 
conglomerate of the Carboniferous system made. The dolerite 
rocks of Cauldron Snout were then studied, and the members 
returned by way of Thistle Green and W^hite Force to High 
Force, whence they drove to Middleton. 
On their return the members dined together, after which 
the General Meeting was held, under the presidency of Mr. W. 
Gregson. Mr. Samuel Margerison, of Calverley, was elected 
a member of the Society. The Chairman gave an interesting 
address, dealing with the archaeology of Teesdale, describing 
in the course of his remarks the two types of barrows which 
had been opened in the dale, the extinct and rare wild animals 
of the district, and the Roman remains. Mr. J. T. Sewell read 
a paper on " New Sections in the Pickering Delta," in which 
he dealt with various matters related to the glaciation of the 
district, and brought forward evidence that one at least of the 
glacial lakes had stood at a level considerably higher than had 
been previously supposed. ]VIr. Dwerryhouse gave an address 
on the general geological structure of Upper Teesdale, after 
which some interesting sections of the trenches made in con- 
nection with the Stockton and Middlesbrough Waterworks 
were exhibited by Dr. W. Y. Veitch, of Middlesbrough. Geo- 
logical specimens from Austraha were exhibited by the Chairman. 
The party proceeded by coach on Saturday through Lune- 
dale to Grains-o'-th'-Beck Bridge, near the summit of the Upper 
