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Show I ( A New K!l of Dnnr, Space s tremendously valuable in big I cities, and that is one reason why fifteen story buildings loom up on seventy-five fout lots. Not content, however, with folving the problem of tall structures, architects are busy devising means to economize tho room within the walls. Among other things they have planned h door which is an adaptation of t hi principle of the roller top desk nnd cover. When the door is opened it is wound upon a spiral drum tit top and bottom, and ull is inclosed within the door cas-leg. cas-leg. A three foot door winds np iu a roll of seven inches diameter. |