378 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 
The next two groups are also unrepresented in our exhibits, 
save by a single specimen of mica-schist from Otter, in Group 4. 
To the Ardrishaig phyllites belong the rocks at Dundarave and 
in the four islands above Loch Gilp—Liath Eilean, Glas Eilean, 
Eilean Aoghainn, and Fraoch Eilean. 
For the names of the specimens exhibited we are indebted to 
Mr. B. N. Peach, F.R.S., H.M. Geological Survey. 

Heronries, Past and Present, in the Clyde Faunal Area. 
By Hue Boyp Wart. 
[Read 25th April and 29th August, 1899.] 
Tue Common or Grey Heron (Ardea cinerea, Linn.) is a resident 
bird of frequent occurrence in our district in localities suitable 
for it, sometimes straying within the bounds of the city of 
Glasgow, ! but of its breeding-places, in spite of both the 
ornithological and antiquarian interest which attaches to them, 
no adequate or detailed account exists. The late Mr. R. Gray, in 
his published works, refers in a general way to local Heronries ; 
Mr. Henry C. Young, in his “ List of Birds which breed in the 
vicinity of Glasgow,” marks the species ‘‘R” (rare), and names 
only Hamilton and Inverkip;? and Mr. J. E. Harting, in his 
account of “British Heronries,” names ten (some extinct) in our 
“Clyde” counties, and further remarks “that many doubtless 
will be surprised to learn that within the limits of the British 
Islands, the existence of more than two hundred Heronries has 
lately been established.” $ This figure, which is altogether an 
under-estimate, has unfortunately found its way into more than 
one work on British Birds, including Prof. Newton’s Dictionary 
of Birds (1893-6), * where Scotland’s share of the above number 

1 Annals of Andersonian Nat. Soc., I1., p. 47 (1896). 
2 Fauna and Flora of Clydesdale, &c. (1876), p. 10. 
3 Zoologist (1872), p. 3261. 4 Pp, 418, 

