494 Horace B. Woodward—Lias Iron-ore in Raasay. 
6 inches to a mile. In the end, I have had the satisfaction of finding 
my work in harmony with that of previous observers; and that 
the main features depicted on Sir Archibald’s map coincided well 
with the stratigraphical divisions and faults I had traced, while 
working independently on the far better (though by no means perfect) 
sheets of the Ordnance Survey. 
It will be needless to refer in detail to the observations published 
by others, as my object is simply to record the fact that during the 
course of my work I came across a bed of oolitic iron-ore that has 
not been previously noticed. 
This iron-ore occurs in the uppermost part of the Middle Lias, 
on top of the calcareous sandstones that yield Ammonites spinatus, 
Gryphaa cymbium, Pecten equivalvis, Rhynchonella tetrahedra, Tere- 
bratula punctata, and Walaheimia cornuta; and beneath the dark 
shales of the Upper Lias that yield Ammonites communis, A. serpen- 
tinus, A. exaratus, etc. 
The ironstone itself yields fossils, but not in abundance, and too 
poorly preserved for specific identification. They include Ammonites, 
Belemnites, Astarte, Pecten, Rhynchonella, and pieces of fossilized 
wood. The iron-ore is a greenish-grey oolitic rock, weathering 
brown at the surface and along the joints; and it attains a thickness 
of five feet. Occasionally a thin layer of oolitic ironstone occurs 
above the main mass, near the base of the Upper Lias shales; and 
from this horizon I have obtained Ammonites annulatus and A. 
communis.’ 
The position of the Raasay ore therefore corresponds approxi- 
mately with that of the Cleveland ironstone, although in Yorkshire 
the upper part of the Middle Lias contains a number of iron- 
stone bands. Mr. George Barrow, to whom I showed a specimen of 
the Raasay ore, remarked that it precisely agreed with Yorkshire 
examples with which he is so familiar. In composition, as well as 
in other characters, the Raasay ore compares well with that of 
Cleveland, for analyses made by Mr. A. B. Dick show that they are 
practically identical. The Raasay ore yields 29 per cent. of metallic 
iron in the grey rock (carbonate), and 387 per cent. in the brown rock. 
The iron-ore may be traced in several places on and near the foot- 
path that leads from Loch a Mhuilinn, near Raasay Manse, towards 
Dun Caan, on the borders of the Inverarish Burn and its tributaries. 
It occurs near Macdonald’s Glen, and some distance east of the 
main cascade, where the waters tumble over a mass of Granophyre 
that is fanlted on the west against the Middle Lias. It may be 
traced for a mile at various points along this eastern outcrop; but 
further on towards Hallaig the strata are obscured by peaty cover- 
ings and debris, due to land-slipping. Again, the iron-ore may be 
found along the eastern slopes of Beinn na Leac, where the beds 
are much slipped, so that the true outcrop is almost wholly obscured. 
Nowhere along the grand cliffs below Dun Caan and onwards to 
Screapadal could I find any evidence of the iron-ore, nor was there 
1 The species of fossils collected by me were named by Messrs. G. Sharman and 
KH. T. Newton. 
