Ground-water papers for a meeting of the International Union of Geodesy and Geophysics, Toronto, Canada, September 3-14, 1957.

                           UNITED STATES
                    DEPARTMENT OF THE INTERIOR
                         GEOLOGICAL SURVEY
                     Water Resources Division
                        Washington 25, D.C.

In reply refer to:                              March 20, 1957
                                                Code 4051 0001


To:       District Chiefs and Staff Officials, Ground Water Branch

From:     Chief, Ground Water Branch, Washington, D.C.

Subject:  Ground-water papers for a meeting of the International
          Union of Geodesy and Geophysics, Toronto, Canada,
          September 3-14, 1957.

Recently, it was called to my attention that only three ground-
water papers, all of which are by authors outside the Survey, have
been offered for the International meeting in Toronto next
September.  In view of the splendid record which the Ground Water
Branch has had in participating in the international meeting of
the International Union of Geodesy and Geophysics, we have been
reminded that it would be most unfortunate if we did not present a
few papers at the Toronto meeting.  Although there is little time
to obtain papers, I am hoping that at lease a few of you will find
that you have papers which can be made available, so that the
abstracts can be submitted by April 10 and the papers by May 1.
There is hardly time to prepare new papers, but I believe that
some of you have papers which have been approved for publication,
and which relate to one of the following subjects which are to be
discussed at Toronto:

1.  Methods used in production of hydrogeologic maps, showing the
occurrence, quantity, and quality of ground water.
2.  Outlines of methods for estimating ground-water resources
(excluding geophysical methods).
3. Contamination of ground water by saline water, industrial
wastes, mine or oil-well waters, etc.
4.  Methods of using radioactive and other tracers to determine
direction and rate of movement of ground water.
5.  The role of vegetation and cultivation of a catchment in the
hydrologic cycle.  The last subject will be discussed at a joint
meeting of the Surface Waters, Subterranean Waters, and Land
Erosion Commissions.

It will be appreciated if each of you will let me know promptly by
air mail what papers on the above subjects can be made available
from your district.  As soon as that information is received in
this office we will select the papers that seem to be the most
appropriate and notify the authors, so that they will transmit an
abstract (4 copies) of not more than 250 words to this office
before April 10, and will make certain to get the paper into this
office by May 1.  If abstracts and papers not yet approved in the
Director's office for publication are submitted, they of course
should be sent early enough so that there will be a reasonable
chance of getting approval in the Director's office before the
deadline.  Papers already approved for publication of course will
not have to be submitted to the Director's office for approval.

The papers should not exceed 20 typed pages, each of 360 words,
with double spacing between the lines.  This over-all length
should include all illustrations and tables.  Where illustrations
are required original tracings should be sent.

Your prompt attention to this request will be appreciated very

                            (s) A. N. Sayre

Distribution:  A, B, GS, GFO