Penny Blood: Serial Sensation and Working-Class Entertainment — page 149: what you’re looking at

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

Ww oO Pe 132 DISTURBED TRACT. (cH, x. In the diagram suppose compression to have taken place by a movement of RS towards PQ. A portion of the crust will 2 b - . Tiars Scale 7, of an inch to 5 miles. The upper line OO is the sea level. The upper broken line is the upper mean level. The middle broken line is the neutral zone. The lower broken line is the lower mean level. A the volume above the sea level. B the volume below the lower mean level. G is the centre of gravity of the tract. The thickness of the crust is about 25 miles. The length PR is 400 miles. The height of 4A above the sea level is 5 miles. The length of the compressed portion is here represented as about 100 miles. have become thickened, accompanied with internal corrugation and disturbance: and the thickening will die out gradually towards BS. This corrugated portion is represented in the diagram as about 100 miles across, but it would have been better had space permitted to have drawn it wider. If the neutral zone between PQ and RS were now to main- tain its horizontality, we should have the volume elevated above the mean line PR ; that depressed below the mean line QS :: 2; 3." Such a condition of horizontality would require that = (b) =0 and & (a)=0. It would also give for the condition of floating equilibrium, 2 (a) -2 (0) z(B)—-2(a) ” which would require that = = #, or 0°666, and the subjacent fluid would need to be $ times as dense as the crust. This is alto- gether unlikely. We haveon the other hand hitherto assumed, 1 p. 135. COMICOOOLKS @ (CO) = a.