149 
judging from their published writings, with the exception 
of Mr. Jopling, who, in his sketch of the geology of Low 
Furness and Cartmel, comprehending the Hundred of 
Lonsdale north of the sands, published in 1843, when 
speaking of the geology of Gleaston, says : — “ Carboniferous 
limestone abounds, and in the quarries near the castle are 
many fossils beautifully preserved in the shale beds between 
those of the limestone ; there is also a vein of trap.” At 
page 72, the same author says “ there are also appearances 
of trap near Gleaston, associated with limestone breccia.” 
In the month of October last, Miss E. Hodgson was so 
kind as to send me some specimens of rocks from Gleaston, 
which puzzled her a good deal. Some of the parties to 
whom she had sent them called them dolomites, whilst 
others named them traps and greenstones. To the latter 
opinion Miss Hodgson, I believe, was inclined to add the 
weight of her sanction. Not having previously seen, or 
even heard of, the occurrence of any such rocks in the 
district where they were said to be met with, I went over 
to examine them, and having been furnished with informa- 
tion by Miss Hodgson, easily found the place where they 
are exposed at Gleaston Green. At that time Mr. Jopling’s 
book had not been seen by me. The space occupied by 
these singular rocks, at least so far as at present exposed, is 
so limited that all that can be seen is very soon ascertained. 
Specimens were collected, and a few observations made. 
The former, by the kindness of my friend Professor Roscoe, 
F.R.S., were analyzed for me in the laboratory of Owens 
College. It is only by the labours of the chemist that 
geologists can with any certainty decide upon the age and 
origin of such rocks as those which are met with at Gleaston. 
On approaching Gleaston Green from Scales, the moun- 
tain limestone appears to occupy the country so far as it 
can be seen. In a quarry below the old castle on the road- 
side, this rock in the northern part is very hard, and dips 
