THE ALKALI METAL PHOTOELECTRIC CELL 335 



Photo-electric Proiicrties of Thin Fihns of Alkali Metals, H. E. Ives, Astrophysical 

 Journal 60, p. 209, 1924. 



The Normal and Selective Photo-electric Effects in the Alkali Metals and their 

 Alloys, H. E. Ives and A. L. Johnsrud, Astrophysical Journal 60, p. 231, 1924. 



Variation with Temperature of the Photo-electric Effect in Potassium Photo- 

 electric Cells, H. E. Ives, Optical Society of America Journal 8, p. 551, 1924. 



The Influence of Temperature on the Photo-electric Effect of the Alkali Metals, 

 H. E. Ives and A. L. Johnsrud, Optical Society of America Journal 11, p. 565, 1925. 



The Voltage-Current Relation in Central Anode Photo-electric Cells, Ives and Fry, 

 Astrophysical Journal 66, p. 1, 1922. 



