246 Bs 5; NOTES—ORNITHOLOGY. 
those in which me had been originally carried. This factor is one 
of much importance in connection with boulder-distribution, and 
should be Ao borne in mind in any speculations upon the 
direction of glacial transport. 
Just as I believe we shall all have to give up the old belief in 
glacial submergence, so, too, I believe we shall have to abandon the 
idea that, in Yorkshire at least, any smaller glaciers followed the 
conclusion of the period which saw the termination of the ice-sheet. 
I have no doubt about the existence of very tiny glaciers even 
as far south as the more mountainous parts of Cumberland, but in 
Yorkshire there were none. 
Since the conclusion of the Glacial Period the weather has been 
unceasingly at work restoring the surface to something like what its 
features were before that epoch. The boulder clay is being steadily 
washed away—indeed, on the limestone plateaux it has nearly all _ 
disappeared down the joints as fast as these are widened by 
atmospheric erosion. The glaciated surfaces, those of limestone 
especially, are being fast replaced by weather-worn rock of different 
orm, and in a few thousand years there will be but little evidence 
remaining of the former presence of a great ice-sheet in Upper 
Ribblesdale. 
NOTES—ORNITHOLOG Y. 
r Nests of Missel Thrush. — Jur une 18th, while investigating 4 
plant seh of scrunty trees at an elevation of eet in S.W. Yorks., I came 
across several nests of Missel Thrushes (Tisrdues pete built mainly of 
sheep’s wie: and lined with green or dry grass. They were ail similar, and very 
peculiar.—S. L. MosLey, Huddersfield, 23rd June, 1892 
—Missel Thrushes very frequently make use of substances in the construction of 
their “at which are not usually regarde be as being quite natural. ow-a-days 
ree. ogi of human harriers range the country districts in = Sesh icy and the 
they scatter broadcast siestebulty consists of fine strips of paper- 
spy som Btrosct — those bordering on country high cisoa: the nests are 
very largely composed of this material, but the writer does not remember having 
ever found a nest in which the grassy lining was replaced by pap or, in fact, 
any other material. — 
Birds of Derbyshire.—I venture to appeal to readers of ‘The Na turalist’ 
to afford me any information in their power respecting the Birds of Derbyshire, 
for a forthcomi ork on similar lines to those treating of other counti 
is a tter for regret o few not rri an interesting 
ounty are ted he current natural history journal t herefore 
hoped that naturalists will t n opportunity of recording any facts relating to 
Derbyshire birds within their own knowledge. Local lists of even the co est 
h 
1 a 
Species are desired, as owing to the very diversified se er of the county, ! 
y 
Me i pect ee 
Extracts from churchwarden orem referring ree the destruction of the 
larger birds of Prey, would be very welcome and. would be acknowledged i indus 
course.—-F, B. WHITLOCK, Beeston, Ni aie, : 
eae oe 
