About two years ago, at the request of the United States Hydrographic Office, work was begun by the Coast and Geodetic Survey on some special tables to take account of the indirect or Bowie effect in the isostatic reduction of gravity‐stations. The purpose of the tables was to make it possible to apply a correction at each gravity‐station for the difference in elevation between the actual geoid and the mathematical spheroid on which the gravity‐formula is based. The neglect of this effect has a tendency to produce systematic errors of opposite sign in the isostatic anomalies for land‐ and sea‐stations.The tables have now been completed and have been used to compute the indirect effect at about 1000 land‐ and sea‐stations. A fairly large part of the discrepancy between land‐ and sea‐anomalies has been eliminated by the use of this correction. Photographic copies of the tables have been sent to geodetic organizations in other countries and it is anticipated that the isostatic anomalies at many additional stations will be corrected in this manner within a short time. It is understood that Dr. Meinesz plans to compute this correction for all his sea‐stations except those in the West Indies for which the Coast and Geodetic Survey has already derived the