Horace B. Woodward—Lnas Iron-ore in Raasay. 493 
PLATE XYII. 
Fic. 1.—Anomeodus Willetti, sp. nov.; anterior portion of skull, viewed from the 
right and left (1a) sides, two-thirds nat. size. Also the left mandibular 
ramus, inner aspect (10), and the dentigerous face of the vomer (1c). 
Lower Chalk; Glynde, Sussex. ar. articular; e. ethmoid; fr. frontal ; 
md. left mandibular ramus; y.op. pre-operculum ; pas. parasphenoid ; 
pt. pterygo-palatine arcade; qu. quadrate; spl. splenial; v. vomer. 
[ Willett Collection, Brighton Museum. | 
2.—Pycnodont Vomerine Dentition, oral aspect. Greensand; Isle of Wight. 
[ British Museum, No. P, 3758. | 
», 8, 4.—Pycnodont Vomerine Dentition, oral aspect and side-view (3a). Cambridge 
Greensand; Cambridge. [Woodwardian Museum. ] 
5.—Celodus inequidens, sp. noy.; left splenial. Jdid. [British Museum, 
No. 36157. | 
6.—Celodus jimbriatus, sp. nov. ; imperfect right splenial dentition. Lower 
Chalk; Halling, Kent. [British Museum, No. 43090. ] 
7.—Pycnodus scrobiculatus, Reuss; vomerine dentition, twice nat. size. 
Chalk; Charing, Kent. [British Museum, No. P. 322.] 
Unless otherwise stated the figures are of the natural size. 
39 
9) 
29 
99 
Erratum.—On page 485 the numbers of the figs. of Athrodon 
erassus and A. tenwis are transposed; for Fig. 2 read Fig. 3, and 
vice-versa. 
I1J.—On a BeEp or Ootrtic TRon-oRE IN THE LIAS oF Raasay.! 
By Horace B. Woopwarp, F.G.S. 
[Communicated by permission of the Director-General of the Geological Survey. ] 
VHE rocks of Raasay have attracted a good deal of attention from 
geologists, despite the fact that no house of public entertain- 
ment exists on the island. That portion of it which lies to the south 
of Brochel Castle, exhibits a base of Torridon Sandstone, above 
which there may be traced, more or less completely, in two faulted 
areas, an ascending series from the New Red rocks to the Great 
Oolite group. The Jurassic strata are finely exhibited in the eastern 
cliffs, but westwards they are largely covered by volcanic rocks, 
and especially by great sheets of Granophyre which descend in that 
direction to the sea-level. To the south-west there is a mass of 
Gabbro; in other parts there are sills and countless dykes of Basalt, 
while the summit of Dun Caan is formed of a bedded mass of that 
material. Coverings of Peat, of Boulder-Clay and Gravel, serve to 
add variety to the geology, and to obscure the outcrops of the 
Jurassic and other rocks. 
Our knowledge of the geology is due principally to the labours of 
Macculloch and Murchison, followed by those of Sir Archibald 
Geikie, Dr. Bryce, Prof. Tate, and Prof. Judd. 
Sir Archibald Geikie, in 1857, constructed a geological map of the 
island, on the Admiralty Chart, on the scale of about 24 inches to 
a mile, but this work has not been published, except in a very 
reduced form on geological maps of Scotland. 
In the summer of last year, I commenced the mapping of the 
Jurassic rocks of Raasay for the Geological Survey, on the scale of 
* Read before Section C, at the meeting of the British Association at Nottingham. 
