Penny Blood: Serial Sensation and Working-Class Entertainment — page 123: what you’re looking at

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

106 CRUST NOT FLEXIBLE. [cH. rx. Dividing the numerator and denominator by y, : ” dn P~75 ds _—_— pk Integrating this equation, aud taking the origin at an anti- clinal, we obtain a +y vk? —& dy = 0. * This represents a circular arc. If X be the distance from one anticlinal to the next, we obtain for 5 the value a o ¢ and for the final wae which gives the ers of the centre rn 1 /16 9° : 9? and 5 r ke—r?; and the radius =P These conditions are possible so long as » is less than “Pk; when it has that value the festoon between the anti- clinals becomes a semicircle. It appears therefore that, when no extraneous force acts upon the crust, a section of it will assume the form of a series of equal circular arcs, the radii of which depend solely upon the mass (pk) of a unit of length of the crust, and upon the den- sity o of the liquid on which it is supported. The degradation of the undulating curve into a series of circular arcs takes place through the compression at the anticlinal f becoming zero. The curvature (p. 103) at an anticlinal in this case becomes infinitely great. COMIC DOOKS.CO