56 David Milne-Home on Ancient Glaciers. 
and sand, at least 200 feet in height. At the west end of a 
railway tunnel, large portions of limestone rock were being 
tirred of the stratified gravel beds lying over them, which 
showed extensive smoothings. Near Bussigny and Cossonay, 
hills of sand and gravel occur, containing great blocks of 
granite, and in several places there are deposits of fine clay, 
from which bricks are made. 
To the north of Lausanne there is a hill called the Signal, 
2000 feet above the sea, near the top of which beds of sand 
and gravel occur, some of them 20 feet thick. Similar deposits 
are seen at Aubonne and to the east of Nyon; at this last men- 
tioned place, imbedded schistose blocks are very numerous. 
West of Nyon there are brick-works. 
Along the south side of Lake of Geneva great cliffs may 
be seen, even from the deck of the steamboat, of fine clay, 
sand, and gravel, with occasionally boulders protruding; and 
there are immense numbers of these along all the shores of 
lake, partly covered by the water, which have probably fallen 
out of these pleistocene cliffs when undermined. These super- 
ficial deposits along south bank rise in level towards the east, 
and form a slope which had previously attracted my atten- 
tion when looking across the lake from Lausanne. It can be 
distinctly observed extending from Meilliere, near the valley of 
the Rhone, towards Geneva. I afterwards discovered that Mr 
Neckar had, in his “ Etudes Geologiques,” taken notice of this 
deposit ; and he mentions that at its east end it rises to a height 
of about 1900 feet above the lake, or 38235 feet above the sea. 
Near Boisy, which is more than half way from Meilliere to 
Geneva, Mr Neckar mentions that the height of this diluvial 
deposit above the sea is about 2277 feet, where it consists 
entirely of “alternate beds of fluviatile sand, gravel, and pri- 
mitive blocks.” Near St Julien, which is three miles west of 
Geneva, there are diluvial terraces about 182 feet above the lake, 
and 1517 feet above the sea; and Mr Neckar mentions that 
there are similar terraces a little S.E. of Geneva, which are 
162 feet higher ; thus proving that the whole of the south side 
of the valley presents a series of pleistocene deposits, which, 
at the mouth of the valley of the Rhone, are at a height of 
3300 feet above the sea, and slope gradually down towards the 
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