96 
In !N"o. 2 the boulders are composed of sandstone and 
other local rocks, with a slight intermixture of travelled 
boulders; towards the lower part the latter become more 
numerous, until in ISo. 3 they predominate to such an extent 
that the local rocks are as rarely found as the crystalline ones 
were in the upper part of the series. Many of the granitic 
and other hard rocks were of large size, being near a foot in 
diameter, well rounded, but showing no marks of striae. 
The boulder beds contain two very inconstant beds of 
sand; the upper one is about five feet from the top, and 
ranges from two feet to one foot in thickness. It is distinctly 
stratified, and composed of fine sand. The beds occasionally 
divide, and a section a few yards distant would give three beds 
of sand instead of two, with a layer of boulders interposed. 
Unfortunately, I was unable to be present when the clay, 
with stones resting on the white rock, was excavated. This 
bed might throw some light on the question of glaciers 
having occupied the valley before the mass of boulders was 
deposited. 
This section, showing the base of the boulder beds to be 
42 feet 6 inches below the surface, is in the same extensive 
level part of the valley as the gasometer section at Thornhill, 
being a little over a mile distant. By following the course 
of the stream to Wakefield, the valley will be found to be 
filled up with similar beds of boulders; and at the latter 
place a section gave a thickness of 27 feet of boulders and 
sand resting on the blue bind of the coal measures as fol- 
lows : — 
Soil 2 ft. 
Yellow and blue clay 7 ft, C in. 
Sand and gravel ... ... 18 ft. 
Blue bind. 
The sand and gravel were composed of similar materials 
to the sections at Dewsbury and elsewhere. 
