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Show SEEING THE INVISIBLE RAYS H At a recent raeeting of the American H Association for the Advancement of H Science. Prof. Robert V. Wood of H JOhns Hopkins university demon H struied a machine by which ultra-vio K let rays Invisible to the nakd H were made H The detector mas irxonted In ra- H s0nnse to a request fn n. the WW do psjrUuent during tho Eur p-aa cotf let H bp, I tho machine was not perfected in H tifcie to be used by our o. . ri.m-nt. B The Invisible ras would have been B oCtreat advantage in signaling, us (few H eneiu, without the device rmpluvcd by Professor Wood, would not realize 'messages were being conveyed Admiral Jclllcoe tells of the dlfficul I ties to be encountered In the nlghi light with the German fleet off Jutland The Germans had a code, communi cated by searchlights, which disclosed ihe Identity of their ships to their own ol fleers, but the British were without means of Ident iflrBt Ion. With the I ultra violet rays and the Instrumen' ifor seeing tho same, Jelllcoe mlglr. 'have fought a more successful battle. |