National Geographic : 1890 Apr
National GeographicMagazine. to secure accuracy. The greatest depth reached was about one mile. An elaborate discussion of the results fixes the increase of temperature at 10 F. for each 65 ft. increase of depth. This is about 15 ft. greater than the figures that have heretofore been given ; a difference so large that we may question if they will be generally accepted until verified by further observations made with equally great care. In conclusion permit me to note the fact that the United States was for the first time represented in the International Geodetic Association, at the meeting recently held in Paris; and also to record the successful conclusion of the fourth International Geographical Congress that assembled in Paris in August last. The reports from the Congress indicate a wide range of subjects discussed, and lead us to believe the interest in our science is progressive, and must receive the hearty appreciation of all who are inspired by the nobler instincts to develope the great sphere on which we live ; that the riches, the beauties, and above all the grandeur of Nature, may be made manifest to ourselves and for our posterity.