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Show Xorel Application or Phofosnplir. My attention has recently been called to several unique applications of the art or photography, one or which, In particular, relates to building matters, and must be or Interest In-terest to all engaged In the building trades. A graphic history cf the new library building at Washington is being prepared. When It Is completed, com-pleted, it i safe to say it will be oue of the most unique narratives of a building that bos ever been prepared. pre-pared. The pencils used are the rays ot the sun, and the paper is the sensitive sen-sitive plate or photographic camera. came-ra. At regular Intervals from the top of the building occupied by the superintending architect and his force of draftsmen a camera Is turned upon the -work, which at present consists only ofa great hole dugout in the square just eastorthccapitol grounds. The resulting pirture shows every detail of the condition of the work, the height of tho foundation foun-dation wall, the piles of material on band, etc It. Is proposed to file these photographs aw ay. properly labeled in such form that they can be produced pro-duced If any question arises as to what was done or was riot done at any stage of the work. CarpenSry and Budding for April. . |