WERXKIUAN SYSTEM. 
C2I 
raucous force is established b/ several well-known phenomena. 
And that protrusion actually did take place, seems to be proved 
by the undoubted appearances of dislocation exhibited in veins, 
and perhaps not less distinctly by the great angular elevation 
of certain strata of rocks. 
On the question of elevation, however, this conclusion has How far ad- 
been controverted. It is, indeed, admitted, that strata, com- 
posed “ almost entirely” of mechanically divided matter, must 
have been deposited horizontally ; but the inclined position in 
those of partially mechanical formation is ascribed, as we have 
seen, to the predominance of components chemically dis- 
solved ; and Mr. Jameson, though he enteis into no detail of 
proof, has asserted as a that all inclined strata, with a 
very few exceptions, have been i'ormed so originally, and do 
not owe their inclination to any subsequent change"*’.” 
It would, nevertheless, be easy to point out strata evidently Many strat.i, 
composed “ almost entirely" of matter mechanically divided, 
which vet are very much inclined. It is, indeed, impossible chaimMlIy <li- 
, ' • , , . . . .. .. vi.l.-a, i.re 
to have examined rocks as they exist in nature, without having huk-Ii inclined. 
repeatedly observed them. The remarkable appearances at 
Valorrine, in the Alps of Switzerland, described by Saussure, 
have been selected by Mr. Playfairf as an instance of this de- 
scription ; and they are very well deserving of attention, both 
from the celebrity of the original observer, and the prompti- 
tude with which his inferences were deduced. The main fact 
exhibited at the place now mentioned, too, is- this, that beds 
of a coarse pudding-stone, which, from their composition, must 
evidently have been formed in a position nearly horizontal, are 
actually found to be inclined to the horizon at an angle of almost 
99®. The conclusion from these appearances occurred to Saussure 
at sight of them, upon the mountain itself ; and the impression 
produced by what he saw, with respect to the probability 
• Jameson, III, p. 55-56. 
t Saussure. Voyages, 8vo. S, 5 d88, &c. Playfair’s Illustrations, 
S HO-41. 
of 
