Excerpt from Investigations of Gravity and Isostasy

It is hoped that many of those who are interested in the subject of isostasy will use the data contained in this and similar publications of the Survey for detailed study and investigation. It is only in this way that the data collected and published can be fully utilized. The time which can be placed on this work by members of the Survey is necessarily limited, because of many other lines of duty calling for prompt attention.

It is believed that it is desirable to publish promptly the observed values of the intensity of gravity and the reductions for topography and isostatic compensation rather than to delay for exhaustive detailed studies.

The author desires to express his appreciation of the important part taken by a number of the members of the Survey in the investigations covered by this report and in the preparation of the report itself. Especial credit is due Computers W. D. Lambert, Sarah Beall, H. G. Avers, C. H. Swick, E. F. Church, and G. E. Selby.

Assistants C. L. Garner and J. D. Powell deserve much credit for the efficient way in which they carried on the field work while establishing the 94 new stations. They did this work with great accuracy and economy. They also assisted in the office reductions.

As far as possible this report follows the general plan of the two previous gravity reports of the Survey. As the writer is the author of the second of those reports and a joint author of the first, some of the statements and definitions contained in the text of this volume may be similar to those in the former reports. Under the circumstances it is not necessary to set them off from the other text.

In Part I of this volume are given the results of the investigations, and in Part II the abstracts or summaries of observations in the field and the descriptions of the stations.

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