• 1 X-Ray Department, Van't Hoff Laboratory, University of Utrecht. April 14.
• 2 Histological Laboratory, University of Utrecht. April 14.
• 3 Histological Laboratory, University of Utrecht. April 14.

Abstract

THE intensifying screens in use for medical radiography cannot be employed to reduce times of exposure when working on tissue fibres, as they are not sensitive to the radiation used in structure analysis. However, Messrs. Ilford, Ltd., London, have now produced a screen, the Ilford Fluorazure intensifying screen (Levy-West), which proves to be very suitable for this purpose; this screen was put at our disposal by Mr. Chr. J. Bruno Wittgrefe, of the X-Ray Section, Ilford Co., to whom our best thanks are due for this kindness.