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Mar. 22 X-ray history under glass; Veteran x-ray tube engineer Thomas H. Rogers vice President of Raytheon's Machlett Laboratories, Stanford, Conn. Holds tow of his company's tubes that illustrate advances made in x-ray technology since 1895 when Roentgen discovered x-rays. Tube at left is an early model that permitted radiation in many directions. New tube at right has spiinning anode to produce sharper pictures with more consistency, fewer retakes, and greater safety for both patient and radiologist

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Advances Anode Conn Consistency Directions Discovered Fewer Illustrate Laboratories Permitted Produce Radiation Radiologist Roentgen Sharper Stanford Tubes X-ray X-rays

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