158 Proceedings of the Royal Physical Society. 
in the east (note it) of the county first, and in the west later 
on, became populated, and the Clyde tidal water populous. 
Then the area around Loch Lomond, or between Clyde and 
Loch Lomond, became, of late years, inhabited. But outside the 
Mull of Cantire we have as yet but scant records except from 
Tiree ; and not until the winter of 1894-95 has it appeared 
abundantly, as coming into Mr Bisshopp’s hands in Oban. In 
strong contrast to this are early accounts of it at Loch Awe, 
and its first appearance in Remony Bay, on Loch Tay, in the 
spring of 1880; and in the past winter of 1879-80 they had 
there “ appeared and continued in unusual numbers all the 
winter,” and that “most of the duck tribe appeared earlier 
by a month.” (See Dewar’s information.) 
I could continue this analysis or resumé of my paper, 
and instance many other correlating groups of facts, but I 
feel I have occupied already too much time and space; yet 
I hope I have succeeded in grouping these facts through- 
out with sufficient incisiveness to enable others to compare 
them, and I trust the map accompanying the paper in the 
Annals, and the explanation facing it, along with the index 
to it, will assist in doing so. 
Just lately we have read (and re-read) that in the Muonio 
tiver district of Russian Finland, Mr A. Sutton Davies “ was 
surprised to find the Tufted Duck so common as it was.” 
This is east or north-east and north of the Bothnian Gulf, 
and the Muonio River drains into it, rising far up among 
the mountains of the “great divide” of Scandinavia. The 
Muonio runs through a low and swampy country during the 
greater part of its course. The migration of the Tufted Ducks 
of this now populous area or centre in all probability follows 
the depression of the Baltic, and pursues a course down the 
coast of Holland to populate the Mediterranean in winter, 
missing out Heligoland, as other species do at their turning 
points; or if a few, or any, round the south coasts of Sweden, 
and come to us then from the east, they may equally miss 
out Heligoland in passing, or pass too high for observation, 
not lowering in flight, as it does not constitute their wintering 
area (see Zoologist, 15th September 1895, p. 331). East and 
north-east of the White Sea—so far as naturalists’ observa- 
