152 MONCKMAN : THE GLACIAL GEOLOGY OF BRADFORD. 
The upper part of this boulder clay was yellowish, and the 
lower blue. There was no appearance of stratification except at 
one place, where two different kinds of material were laid together 
in a rough sort of stratified deposit. 
At Lidget Green specimens of limestone were found in a 
blue clay at and near the corner formed by Legrams Lane and 
Beckside Lane, where they dug for the foundations of the new 
premises of the Co-operative Society, also in the excavations a 
little further along the road towards Bradford (21 Note), while 
to the north the clay ran out, and to the south sandstones only 
have been found. (See 3, 4, 22.) 
Limestone is recorded by the Geological Survey on the Six- 
inch Map at a point about one mile above Leventhorpe Mill 
(S.E. of the Hall). 
Blue clav with limestone was found in difrgino- for the 
foundation of the houses in Burnett Avenue, Manchester Boad, 
(23) ; it is also found exposed at the sides and above the end 
of the tunnel Bradford to Low Moor (25). 
I have not been able to find limestone south of this line, 
and Mr. R. T. Dawson, whose work as a contractor has given 
him opportunities of judging perhaps greater than most men in 
Great Horton, and whose knowledge of geology and interest in 
this subject has caused him to make and record observations 
for a number of years, informs me that there is abundance of 
grit boulders but no limestone anywhere on the hills near Horton. 
(See 1, 2, 5, 8, and a.) 
Mr. Olliver reports that he found limestones, upon blue clay 
with local pebbles, and overlaid by yellow clay, at Lady Boyd, 
Tliornton Road (33). Lower down the road there appears to be 
no limestone in the drift (28, 9, 10, 11, 18, 19, B) until we get 
to Brewery Street (28) and the Town Hall (30), and these speci- 
mens probably came up the valley from Shipley, as did also that 
in East Bowling. 
When I found the limestone I at first considered it to be 
a lateral moraine of about 600 feet elevation. Additional weight 
was given to this notion by the presence at Leventhorpe, in the 
