G8 
has passed tli rough that trench from the west, as shown by striation, 
and the carry of boulders) would, after having been temporarily 
embayed in the angle between the islands, pass over them to fall 
over tlieir high eastern cliffs into the sound between them and 
Eilan AYhirry, as a shattered mass of fragments, powerless in any 
way to affect the eastern island, and which must have been merely 
hurried grinding past its shores. 
A line of fragments disposed in close sequence to the east of a 
gap of rock near the summit of Eilan an Tigh shows very 
clearly the direction of the flow. Several large boulders lie upon 
the high western flanks of Garabh Eilan, but these are of the rock 
of the island, and the positions in which they lie, though they are 
true let-down boulders, did not seem to disclose anything definite 
as to their past. 
A"II. 
NATUEAL HISTORY NOTES. 
Bv Frank Norgate. 
(Communicated by the Honorary Secretary.) 
Read 2,0th December, 1879. 
Nesting habits of the Carrion Crow. This bird is common 
in the neighbourhood of Sparham in the summer, nesting every 
year in Foxley Wood in considerable numbers. I seldom see 
them in the winter, but on the 1 st of February I saw one flying 
near Foxley AYood. These Crows seem to be on very good terms 
with the Kestrels, as I frequently find a Carrion Crow sitting on 
its nest in one tree, and a Kestrel on its nest in the next tree, 
within a yard or two of the Crow. Once or twice I have been 
able to count the eggs in both nests at once, by climbing up a 
little higher than the nests. I often find two or three clutches of 
Crows’ eggs in one day, and as many again the next daj'. 
