Calendar: 1927-1928 Page 452

ANNUAL REPORT xlix Appleton Ε On the Diurnal Variation of Ultra-short Wave Wireless Trans- mission '' Proc Camb Phil 80c Vol XXIII Part 155 1926 Contribution to Royal Society's Discussion on The Electrical State of the Upper Atmosphere Proc Roy 80c Α Vol Ill 1926 Appleton Ε with Barnett On Some Direct Evidence for Downward Atmospheric Reflection of Electric Rays Proc Roy Soc Α Vol 109 1925 Appleton Ε with Watson Watt and Herd On the Nature of Atmospherics Part II Proc Roy Soc Α Vol Ill 615 1926 Part III ibid 654 Curtis New Series in the Secondary Hydrogen Spectrum Phil Mag Vol No 695 March 1926 Flint Η The New Quantum Theory Science Progress July 1926 Williams Notes on the Theory and Use of Transmission and Reflection Echelon Gratings Proc Optical Convention 1926 Fisher Some Further Experiments on the Gyromagnetic Effect Proc Roy 80c Α Vol 109 1925 Emelbus Notes on the Electrical Counter Proc Camb Phil Soc Vol XXIII 85 1926 Emeleus with Dr Chadwick On the Rays produced by Particles in Different Gases Phil Mag Vol January 1926 Harrison Η Study of the Concurrent Variations in the Thermionic and Photo-electric Emission from Platinum and Tungsten with the State of the Surface of these Metals Proc Phys Soc Vol 38 Part 214 1926 Roy On the Law and Mechanism of Monomolecular Reactions Proc Roy Soc Α Vol 110 544 1925 Childs "The Fabry and Perot Parallel Plate Etalon Journal of Scientific Instruments Vol Ill nos and January and February 1926