secretary's report, 1906. 
217 
of ashy fragments, but the beds a little higher up are pure lime- 
stone. The relations of the tuffs to the limestones show that 
the eruptions were submarine. The volcanic necks are found 
to be traversed by several intrusive dykes. 
Ascending Longcliffe a halt was called to examine the 
remarkable sandpits which occar in the neighbourhood. The 
sands appear to have been let down into large hollows in the 
Carboniferous Limestone, and are wonderfully variegated, the 
colours ranging from pure white through all shades of yellow, 
salmon, and red to black. Interbedded with the bands are seams 
of bright red clays, and the whole is capped by 20 or 30 feet of 
fine laminated clay without stones. In the sands are found 
occasionally bleached pebbles of hard grit and limestone. These 
sandpits occupy a series of large pockets or swallow holes in the 
limestone, extending in a straight line from Brassington for about 
seven miles. 
The party then visited Brassington Rocks, with their fine 
castellated escarpment, due to the weathering of the dolomitised 
limestone. 
After dinner Mr. Bemrose exhibited a series of lantern 
slides descriptive of Monday's route. 
The Monday's excursion embraced the interesting glacial 
deposits of the Derwent valley, which near Crich stand at an 
elevation of about 900 feet and attain the unusual thickness of 
90 feet. The glaciation of this region is full of interesting prob- 
lems, to which Mr. Bemrose has given special consideration, 
and which possess many features of interest for glacialists from 
Yorkshire. At the conclusion of the General Meeting very 
hearty votes of thanks were passed to Mr. Bemrose for his lecture 
and leadership, to Mr. Bingley for his lantern exhibition, to 
Mr. Sykes and Mr. Dickons for presiding, and to the Manager of 
Smedley's for his courtesy and admirable arrangements. 
At the adjourned Council Meeting, held at Leeds, on Septem- 
ber 27th, it was decided that it would be more convenient to 
hold the Annual Meeting at Leeds this year, and to associate 
it with a Field Excursion to Whitwood Colliery, Normanton, 
under the leadership of Mr. Isaac Hodges. 
