The welcome news (first received through the British Foreign Office a reliable source of information) that I had been selected for the award of the third Roebling Medal came to me as a great and very pleasant surprise on my seventieth birthday. This is indeed an honour that I deeply appreciate and I sincerely thank the Mineralogical Society of America for so signal an award. It is, I believe, the only medal in the whole world that can be awarded to a mineralogist. Although geological societies have a profusion of medals to bestow (personally I have two such medals), yours is the only mineralogical society that has instituted a medal. To be the third recipient, following the distinguished American mineralogists Professor Charles Palache and Dr. Waldemar T. Schaller, is a special gratification to one in a foreign country. Apart, however, from any personal satisfaction, it is a true indication of the international cooperation and good will that must and will prevail in all scientific work. That the first award outside the United States should come to Great Britain is a symbol of the close bond between our two Englishspeaking countries, and this will I am sure be much appreciated by British mineralogists.