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that have followed this system have done before. Japan also knows full well that the defense of the British group is based on the defense of the island of Cahu and not on the defense of the whole group.

The Island of Cahu, with its military depots, both naval and land, its airdrones, water supplies; the City of Honolulu, with its wharves and supply points, form an easy, compact and convenient object for air attack. The whole area of the island is only about 600 square miles, of which one-half is very mountainous, while the rest is taken up in great part by agricultural developments. The area having an important military baring consists of about 100 square miles or about the same military area for air defense as the City of New York. In selecting the weapons to be used against a location of this kind, an air force has the choice of toxic gases, explosive bombs of various sizes, and phosphorous and incendiary bombs of various categories. The means of applying these weapons consist of serial torpedo which is substance is an airplane controlled and directed by gyroscopes and radio, which can be applied anywhere within the cruising capabilities of the airplane; the gliding bomb, which is a device enabling an airplane to launch this

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