IXDEX SLIP. 
Vaeley, W. Mansergh.— On the Photo-Electric Discharge from Metallic 
Surfaces in Different Gases 
Phil. Trans., A, vol. 202, 1903, pp. 439-458. 
Photo-Electric Currents from Metals—Variation with the Pressure and 
Nature of Atmosphere. 
Varlet, W. Mansergh. 
Phil. Trans., A, vol. 202, 1903, pp. 439-458. 
Eltra-Violet Light—Method of Obtaining a Steady Source of. 
Vareey, AV. Mansergh. 
Phil. Trans., A., vol. 202, 1903, pp. 439-458, 
