74 Reports and Proceedings. 
sea-level, abounding in Gryphea incurva, Pecten equivalvis, and 
Lima; above the limestone lie thick beds of white sandstone with- 
out fossils; and this again is covered by thick masses of tabular 
basalt. Tertiary Leaf-beds of Ardtun Head.—On the 18th of 
July we rowed across from Iona Bay to Ardtun Head, and were 
shown the Tertiary leaf-beds by Mr. Campbell, who kindly pro- 
vided us with blasting-powder and jumpers, by means of which 
we succeeded in obtaining some excellent specimens of Platanus 
Hebridicus from the bed of shale that underlies the bed of con- 
glomerate formed of Chalk-flints and Chalk-pebbles——Lias Se. 
of Pabba.—We visited the Island of Pabba on the 1st August, 
and brought away, by diligent quarrying, a good collection of fos- 
sils. These were kindly examined and named for me by Mr. 
Baily, Paleontologist of the Geological Survey of Ireland, who 
possesses special knowledge of these fossils, from the fact of his hav- 
ing assisted Professor E. Forbes in the determination of the Oolitic 
fossils found by him at Loch Staffin, in Skye.—— Oolite of Mull.— 
On the 5th August we landed at a new locality for fossils on the east 
side of Mull, pointed out to us by Mr. Campbell, of Aros, ‘Tobermory. 
We found shale-beds at the sea-level, converted into flinty hornstone 
of a greenish colour by enormous masses of amorphous trap that 
covered them; and it was with much difficulty we brought away 
the few fossils we quarried out, as there was a heavy sea running 
on the shelving rocks, and our ‘gig’ was in some danger of being 
stove in. Z 
Mr. Barty remarked that, as observed by Professor Haughton, 
he lithographed the Oolitic fossils from the Isle of Skye, deseribed 
by Prof. E. Forbes, and obtained from both freshwater or brackish 
and marine deposits ; those collected by Professor Haughton were 
entirely marine. He also drew the fossil plants from the leaf-beds 
of the Isle of Mull, believed to be of Miocene age, for the Duke of 
Argyll. The drawings and Prof. Forbes’s descriptions were pub- 
lished in the Quart. Journ. Geol. Soc. London, vol. vii. He considered 
the value of such a set of fossils as those collected by Prof. Haughton 
to be greater than perhaps might be supposed, in supplying us with 
additional evidence of the existence of the Oxford Clay at several 
localities (including Pabba and Mull) in the Western Islands of 
Scotland :— Serpula vertebralis, Rhynchonella lacunosa, Lima levi- 
uscula, Pecten fibrosus (?), Gryphea dilatata, and Pinna mitis, from 
Pabba; Pecten and Belemnites Oweni (?), from Skye. 
The Cuarrman observed that a high value belonged to the ‘azoic’ 
portion of the paper, and especially the discovery of the rock which 
connected the old world with the new. In reference to the curious 
little arm of the sea (Loch Scavig) which Prof. Haughton had 
described, a friend of his, the President of the Royal Society, 
observed a very singular physical phenomenon on entering that loch 
at night. ‘There was an aurora borealis, and he distinctly saw the 
auroral streams issuing from the syenitic rock—an appearance which 
he was enabled to confirm by changing his place. If it should be 
