My Lord Chancellor, Mr. Vice-Chancellor, Dr. Campbell, Ladies and Gentlemen: It would be an impertinence on my part to try to add anything to the Cambridge welcome which the Chancellor has offered you, but it is my privilege to be allowed to offer you a few words of welcome from a somewhat different angle. As the Chancellor has said, it is my good fortune to be officially connected with the two learned societies to whom, I suppose, your visit to this country means most: the Royal Society, which takes all natural knowledge for its province, and which is especially interested in international co-operation in the pursuit of such knowledge, and the Royal Astronomical Society, which takes astronomical knowledge for its special care. I am sure that both these bodies would wish that I should seize this opportunity to offer a most cordial welcome to our astronomical visitors from other countries; a welcome not only to Cambridge, but to this country in general. We feel it right that your visit should begin at Cambridge, but we are sure it is not right that it should end there; we hope you will remember that, after Cambridge, London also exists.