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Cheltenham is situated about sixteen miles southeast of Washington. A tabulation of all the earthquake effects thus far recorded on the Coast and Geodetic Su•ey magnetographs[has beeneundertaken. The following information courteously supplied by the director of the Harvard Observatory, Professor E. C. Pickering, will be of interest-"There are, as you suppose, no seismometrie instruments at this Obse•atory. The best observation which we have of the earthquake 0f March •xst is that of Mr. H. R.doi:10.1029/te009i001p00033 fatcat:fspd7sxx2bhcpi3znvtvxxibu4