“For I dipt into the future, far as human eye could see, Saw the vision of the world and all the wonder that would be; Saw the heavens fill with commerce, argosies of magic sails, Pilots of the purple twilight, dropping down with costly bales; Heard the heavens fill with shouting, and there rained a ghastly dew From the nations’ airy navies grappling in the central blue; Far along the world-wide whisper of the south-wind rushing warm, With the standards of the peoples plunging through the thunder storm; Till the war drum throbbed no longer, and the battle flags were furled In the parliament of man, the federation of the world.” GUNNING FOR AIRSHIPS The airship does not float safely in the cental blue, aside from attacks by flying foes. Guns pointing upward have been devised to attack the daring aviator from the ground and flying machines can thus be swiftly brought down, like war eagles shot in the sky. Several types of guns for this purpose are in use, some to be employed on warships or fortifications, others, mounted on automobile trucks, for use in the field. The Ehrhardt gun, a German weapon, which is designed to be mounted on an auto-truck, weighs nearly 1700 pounds. The car carries 140 rounds of ammunition and the whole equipment in service condition weighs more than six tons. The gun has an extreme range at 45 degrees elevation of 12,029 yards, or more than six miles. The sights are telescopic, a moving object can be followed with ease, and the gun is capable of being fired very rapidly. The British are provided with the Vickers gun, which is mainly intended for naval use, but the military arm is also provided with anti-balloon guns, which have great range and can throw a three-pound shell at any high angle. Some of these guns use incendiary shells, intended to ignite the gas in dirigibles. There is another type that explodes shrapnel. In addition to these, rifle fire is apt to be effective, in case of airships coming within its range. Jules Vedrines, a well-known French aviator, tells this story of his experience while doing scout duty for the French army: “Those German gunners surely have tried their best to get me,” he wrote. “Each night when I come back to headquarters my machine looks more and more like a sieve because of the numerous bullet holes in the wings. “I have been keeping tab on the number of new bullet holes in my machine each day, marking each with red chalk, so that I won’t include any of the old ones in the next day’s count. My best record so far for one day is thirty-seven holes. That shows how close the enemy has come to hitting me. My duties as scout require me to cover various distances each day. The best record so far in one day is 600 miles.” THE SUBMARINE