Penny Blood: Serial Sensation and Working-Class Entertainment — page 150: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

CH. x.] DISTURBED TRACT. . 133 on grounds likely to make o@ too large, that ? > = 0104. The crust must then be so rigid that it cannot bend or break (and the points Q and S are not fixed poimts, but may retreat from one another so as to give any requisite smallness to the curva- ture of the bent tract between them) or else it must either bend or break, and hollows corresponding to > (6) be formed in which the ocean would exceed the average depth. It is not likely, from the nature of the case, that any will be formed below, belonging to the series 2% (a). It will consequently take such & position as indicated in the diagram, in which the condition is intended to be approximately satisfied that E (a) ~¥ () 2 (8) The volume A above the ocean level is supposed in the diagram to be about five miles high. = 0°104. Here then we have exhibited the primary idea of the forma- tion of a mountain ridge according to our theory. Let us next proceed to enquire what effects would be pro- duced upon our tract by denudation, and the transference of sediment. It has been shown that % (a) — & (b) = hele + (81— & (d)}. Hence % (a) is always greater than > (5); so that even if sufficient material was denuded off % (a) and carried into & (8) to completely fill it up, 2 (a) would not have been all carried away. This shows that, when once an elevated tract has been formed, it must be permanent. The presence of an ocean also, since the term in yw is necessarily positive, will render the excess of % (a) over > (5) greater than if there were no ocean. It does not however follow that, after %(b) is filled up, > (a) may not be denuded down below the ocean level, which it must be carefully remembered is distinct from, and above, the upper mean level. All that we assert is that an elevation BECO Goo SS (CO)