THE 
GEOLOGICAL MAGAZINE. 
No. XI—MAY 1865. 
ORIGINAL ARTICLES. 
——_~——_ 
I. Notes ON THE SHAPE AND STRUCTURE OF SOME PARTS OF 
THE ALPS, WITH REFERENCE TO DENUDATION.—Part II. 
By Joun Rusxtin, Esq., F.G.S., &e. 
(Plate VI.) 
pA the extremity of my sketch, fig. 1, p. 52, which by the 
printer’s inadvertence is marked y instead of x, the beds 
appear to turn suddenly downwards. ‘They are actually more 
inclined at this spot; but the principal cause of their apparent 
increase in steepness is a change in their strike. Generally 
parallel tc the precipice, it here turns westwards (7.e. towards 
the spectator); and, holding myself bound in candour to note, 
as I proceed, every circumstance appearing to make for the 
modern glacial theories, I must admit that, as the beds at this 
extremity of the cliff turn outwards from the Alps, it might not 
inaptly be concluded that the great Chamouni Glacier, which 
by its friction filed the mountain two thousand feet down at 
the top, by its pressure turned the end of it several points of 
the compass round at the bottom ! 
This change in the strike of beds, though over a very limited 
space, yet perfects the Saléve as a typical example, entirely 
simple in its terms, of a wave of the undulatory district of the 
Savoy Alps. I call it the ‘ undulatory’ district, because, in 
common with a great belt of limestone ranges extending on 
the north side of the gneissose Alps as far as “the Valley of the 
Rhine, it is composed of masses of rock which have bent like 
leather under the forces affecting them, instead of breaking 
like ice; and thew planes of elevation are therefore all, more 
or less. curved. 
This is one of the points on which I want help. I have 
hitherto met with no clear statement of the supposed or 
VOL. II.—NO. XI. O 
