26 
description of the rocks 
Blue limestone, very solid, full of large product®, lithodendra, &c. 
Red limestone, with encrinites and spiriferse 
Gray limestone, in bold scars 
Black nodular limestone beds 
Gray limestone, small-grained crinoidal, compact or splintery, 
white or gray, &c. ... 
Thin bedded limestone ... 
Various limestones, mostly compact, to the level of Kettlewell dale 
Path. Ft. 
1 4 
1 0 
15 0 
0 5 
10 0 
0 1 
55 0 
In. 
0 
0 
0 
0 
0 
3 
0 
Fath. 150 5 9 
The limestone in the country about Kettlewell is often liable to 
a local change into a crystallized yellowish or brown dolomitic rock 
full of ramifications and nodules and hollow cells of calcareous spar. 
The beds and joints in this ‘dun lime,’ for so it is called by the 
workmen, are very irregular, and the rock feels heavy. Altogether 
it resembles not a little the brown dolomitic rock of Gerolstein, in 
the Eifel. It is known to the miners that this ‘ dun lime’ runs in 
lines north and south, destroying the productiveness of the veins 
through the whole mass of limestone. The courses of this metamorphic 
limestone are from a few feet to twenty or thirty fathoms in width 
They are usually defined by a joint, pass down through all the beds 
and sometimes produce pipe or belly veins of lead, which go horizontally 
between the neighbouring beds, but never enter the dun lime beds • 
these in such cases form a cheek to the metallic matters. 
These dun ‘ courses’ are said to throw the veins which run east and 
west, four or five fathoms laterally. 
Nidderdale . — In this valley the limestone series is seen in Steen 
beck, and, with two interruptions, in the river Nid and its banks, from 
Angram to Lofthouse. r l he interruptions here alluded to are caused 
by conglomerate gritstones (‘ millstone grit’), which rest almost directlx- 
on the limestone, where it is thrown down by faults. 
