Page:Popular Science Monthly Volume 69.djvu/299

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was jerked sixteen feel to the north; or that on the east sixteen feet to the south—only a careful re-survey of the region can tell us which. Or it may be that both sides went to the northward, but the west side pulled away, distancing the other by sixteen feet. In any case, the bridge was torn to splinters, and the crack went on, always the west side some sixteen and a half feet to the northward, though the sticky soil tends to lag hack, and not every place shows the maximum of sheering or horizontal displacement. Passing under a barn, the rift tore it to splinters. The spreading wave displaced or destroyed most of the