trousers and civilisation off the face of the earth. We may invent new cocktails, but it would be better to stay dry. In mechanical matters I am reactionary, for I cannot believe in inventions and machinery unless they can be so controlled as to minister definitely to health and happiness――and how difficult that is! In my own country the townsman has become physically inferior to the countryman (speaking in the large), and I infer from this that we British――at all events――are not so in command of ourselves and our wonderful inventions and machines that we are putting them to uses which are really beneficent. If we had proper command of ourselves no doubt we could do this, but we haven’t; and if you look about you in America, the same doubt may possibly attack you. But there is another side to the exploitation of the air which does not as yet affect you in America as it does us in Europe――the destructive side. Britain, for instance, is no longer an island. In five or ten years it will, I think, be impossible to guarantee the safety of Britain and Britain’s commerce, by sea-power; and those who continue to pin faith to that formula will find themselves nearly as much back-numbered as people who continued to prefer wooden ships to iron, when the iron age came in. Armaments on land and sea will be limited; not, I think, so much by a League of Nations, if it comes, as by the commonsense of people who begin to observe that with the development of the powers of destruction and of transport from the air, land and sea armaments are becoming of little use. We may all disarm completely, and yet――so long as there are flying-machines and high explosives――remain almost as formidably destructive as ever. So difficult to control, so infinite in its possibilities for evil and so limited in its possibilities for good do I consider this exploitation of the air that, personally, I would rejoice to see the nations in solemn conclave agree this very minute to ban the use of the air altogether, whether for trade, travel, or war; destroy every flying-machine and every airship, and forbid their construction. That, of course, is a consummation which will remain devoutly to be wished. Every day one reads in one’s paper that some country or other is to take the lead in the air. What a wild-goose chase we are in for! I verily believe mankind will come one day in their underground dwellings to the annual practice of burning in effigy the Guy (whoever he was) who first rose off the earth. After I had talked in this strain once before, a young airman came up to me and said: “Have you been up?” I shook my head. “You wait!” he said. When I do go up I shall take great pains not to go up with that one.