565 



Lawrence Bogorad, Frank V. Mercer, and Rosemary Mullens 



"photosynthetic lamellae" nor is it essential for the formation 

 of unit membranes and their association at the level which oc- 

 curs in C. caldarium in which two or three unit membranes con- 

 stitute a dense band. However, the orientation of dense bands 

 to one another, the extent of the lamellar system, and the gene- 

 ral organization of the chloroplast as a discrete organelle may 

 be affected by the presence of chlorophyll. 



Acknowledgements 



Most of the work described was performed while one of us (L. 

 B.) was a Fulbright Research Scholar and a National Science Foun- 

 dation Senior Post-Doctoral Fellow. Other segments were suppor- 

 ted by funds from the National Institutes of Health (GM 10324) 

 and a Research Career Award from the Institute of General Medi- 

 cal Studies, N.I.H. 



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