Page 



Some Effects of Oxygen in Photosynthesis by 



Chloroplast Preparations 243 



F. R. Whatley 



in. STUDIES WITH ISOLATED ELECTRON CARRIERS 



Photosynthetic Pyridine Nucleotide Reductase. 

 IV Further Studies on the Chemical Properties of 



the Protein 252 



Keelin T. Fry and Anthony San Pietro 



Photochemical Reactions of Plastocyanin in Chloroplasts 262 



Sakae Katoh and Atusi Takamiya 



Evidence for the Role of Several Quinones in the 



Electron Transport System of Chloroplasts 27 3 



R. A. Dilley, M. D. Henninger and F. L. Crane 



The Pathway of Metmyoglobin and NADP Reduction 



by Illuminated Chloroplasts 278 



H. E. Davenport 



On the Participation of Cytochrome f in Photo- 

 synthetic Electron Transport 284 



Giorgio Forti, Maria Luisa Bertole and Bruno Parisi 



The Photosynthetic and Respiratory Systems in 



Euglena Gracilis 291 



Fulvio Perini 



IV. ENHANCEMENT STUDIES: GAS EXCHANGES 



Enhancement 301 



Jack Myers 



Emerson Enhancement Effect and Two Light 



Reactions in Photosynthesis 318 



Govindjee 



Separation of the Effects of Two Photochemical 



Reactions by Studies of Oxygen Exchange 335 



C . S . French 



Chromatic Transients and Enhancement Recorded 



by the Glass Electrode 345 



L. R. Blinks 



Observations on the Function of Chlorophyll a^ and 



Accessory Pigments in Photosynthesis 352 



David C . Fork 



