Penny Blood: Serial Sensation and Working-Class Entertainment — page 176: what you’re looking at

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

CH. x11.] THE THERMOMETER. 159 | Consequently CHAD HCH AD cc csssscscsssceecrees (3). In this equation r, 7’, b, b' are known, and therefore, if we can obtain another relation between c and c’, we shall be able to find the thicknesses of the crust at the place on the sea-level and at the mountain. If we are at liberty to apply the conditions of hydrostatic equilibrium, such a relation is easily obtained, as shown on the left-hand side of the figure, from which it appears that, GONG oOo SS (CO)