x MICROSOMAL PARTICLES 



15. The Synthesis of Hydroxyproline within Osteoblasts [Abstract] — 

 Sylvia Fitton Jackson 121 



16. Studies on Amino Acid Incorporation in Bacteria Using Ionizing 

 Radiation — Ellis Kempner and Ernest Pollard 123 



17. The Effect of X Rays on the Incorporation of Phosphorus and Sulfur 

 into Escherichia coli — Ernest Pollard and Jane Kennedy .... 136 



18. Statistical Relations in the Amino Acid Order of Escherichia coli 

 Protein — Harold J. Morowitz 147 



19. The Formation of Protomorphs — Eran\ T. McClure and Richard B. 

 Roberts 151 



20. Structure of Microsomal Nucleoprotein Particles from Pea Seedlings 

 -Paul 0. P. Ts'o 156 



