SHOCK RECORDED THURSDAY WAS GEOLOGIC SAYS MATHER

The shock recorded on the seismograph in the Geological Museum on Thursday afternoon was an earth tremor of unknown origin, according to an announcement made yesterday by Professor K. F. Mather of the Geological Department.

"Until the recording tape had been taken out yesterday morning," said Professor Mather, "we were not quite sure whether the shock was an explosion of some sort or whether it was of geologic origin. Now, however, there is no doubt that it was an internal disturbance, located near Medford. There is no truth, however, in the supposition that it was due to a frost crack. While it is often possible for the weather to affect the earth's peace, in this instance it has not been the case.