368 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 
Other two were placed within a couple of feet of each other, 
under the same clump of withered brakes. The Wood-rush 
(Luzula maxima, DC.) grows luxuriantly on some of the islets in 
Loch Fyne, and we found its leaves favoured by the Red- 
breasted Merganser for constructing its nest, a material said to 
be used invariably by the Golden Eagle for this purpose. On 
Sgat Mohr we also found a few pairs of each of the following 
species nesting:—The Rock-Pipit (Anthus obscwrus (Latham) ), 
Oyster-catcher (Hematopus ostralegus, Linn.); Common Gull 
(Larus canus, Linn.), Common Tern (Sterna fluviatilis, Naum.), 
and or Arctic Tern (Sterna macrwra, Naum.). Besides the 
species named, the only bird seen was a Red Grouse, but when 
flushed it quickly crossed to the mainland. There were many 
rat-holes in this island, and the presence of this species in numbers 
would perhaps account for the paucity of Terns nesting here com- 
pared with some of the other islets visited later. Indeed, the 
first Tern’s egg we found was an empty one under a large stone, 
to which place it had doubtless been brought by a rat. 
But a short distance from Sgat Mohr lies Eilean Buidhe—an 
islet which presented a very animated appearance from the Terns 
and Gulls which rose in great numbers as we approached. 
Of Terns’ nests very many were seen, about seventy pairs 
probably nesting here. A great variety of situation was 
chosen, but most of the nests were found where the 
rock was pretty bare, just allowing sufficient earth and 
vegetation in a little hollow as a bedding. When these 
conditions were not complete and a bare hollow in the rock 
was available, the deficiency was generally supplied by various 
means. The Sea-Pink (Armeria vulgaris, Willd.) and the Orange- 
stain Lichen were the only plants enlivening some of the grey 
rocks, and in several cases the flowers of the former were largely 
used as a bedding for the eggs. In one instance a hollow was 
filled up with these flower-heads exclusively, and an egg laid 
thereon. In this case we carefully removed the eggs and counted 
the flowers, to find that over two hundred and twenty had been 
used. ‘This nest, with its egg, in the bright sunlight, was an 
object of great beauty. [Pl. XI.] We were unable to satisfy 
ourselves as to the proportions of the two species of Tern here; 
Mr. Robertson thinks, however, that there were but few Arctic 

