Show I New Nev Perpetual Service Barn f 1 Y s it I I 7 5 f r M r Y M Z r bi i d k K L qty r r v rK r w r. r Perpetual service ser and anti use Ilse uninterrupted by hy fires or repairs Is the tile promise of the mason masonry 1 arch barn horn u a new wrinkle le In farm buildings level devel developed le I. I oiled at ut Iowa State Slate college by hy engineers un under er the direction lle Uon of J. J B B. David Davidson son head bead of the agricultural entin engineering department The barn Is con cun constructed of or masonry Aside from window frames and some equip 4 meat ment Irl Inside th there re Is no combustible material In the building Outstanding In the construction t of the Is t the 11 eu nary cult tena r u arch used In lh the roof The 41 picture shows one oue of tic the hums bursts partly completed |