
REPORT OF A VISIT TO SANDA AND GLUNIMORE.’ 201 
species [Pl. ITI.], of which a successful photograph was taken by 
Mr, John Fleming. Mr. John Robertson had the good fortune to 
raise a Black Guillemot (Uria grylle (Linn.)) from her nest and 
two eggs in a crevice of the rock. Only a pair of birds of this 
species was seen in the neighbourhood of Glunimore. Mr. Gray, 
in The Birds of the West of Scotland, &c., in enumerating its 
breeding places on the West Coast, mentions Arran as one 
(p. 427), but on the following page he says—‘ A few pairs are 
seen in the Firth of Clyde, and occasionally a stray bird is 
detected in the vicinity of Ailsa Craig. I have hitherto failed, 
however, to ascertain that it breeds there.” In the Zoologist, 
February, 1894, Vol. XVIII., p. 55, Mr. Robert Service states 
that “it breeds at Ailsa Craig,” but gives no_particulars.* 
However, even should this not prove to be the first and only 
properly authenticated instance of the nesting of Uria grylle in 
the Clyde area, it is at least an interesting addition to our 
knowledge to have found it at Glunimore. 
MOLLUSCS.—In the burial-place at St. Ninian’s Chapel, on 
Sanda, Helix aspersa, Miill., was found. 
GEOLOGY, &c.—So far as was observed during our brief visit, 
the island appears to be mainly composed of sandstone and con- 
glomerate, with thin beds of shale, and a band of cornstone 
towards the north-east. 
The strata dip at a high angle to the south, 40° in the eastern 
part of the island, as seen at Elbow Point, and 30° farther west, as 
seen near the lighthouse, which is situated at the extreme south 
on a projecting point formed by a high rock, called the Ship Rock, 
from its resemblance to a ship under sail. The conglomerate, 
being harder than the sandstone, has, of course, been less worn 
away by denuding agents, and forms ridges in the central part of 
the island, where it alternates with sandstone and shale, while in 
the eastern part it rises to the height of 405 feet above sea-level. 

* Mr. Service writes, that though he certainly saw the Black Guillemot at 
Ailsa several times on the occasion of his visit, he can recall, at the time of 
writing, no more definite authority for its breeding on the Craig than the 
‘statements of Gray (Birds of Ayrshire and Wigtownshire, p. 49). Gray, 
alluding to the Scaur Rocks and Ailsa Craig, says that it is ‘‘ probably a 
native of both places,” 
D 
