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84. Madden, Robert E., and R. Gordon Gould: The Turnover Rate of Fibrinogen 

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86. Branson, Herman: A Mathematical Description of Metabolizing Systems, II, 

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89. Reiner, John M. : The Study of Metabolic Turnover Rates by Means of Isotopic 

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92. Neuberger, A.: Studies on Mammalian Red Cells, in "Ciba Foundation Con- 

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93. Burwell, E. Langdon, Barbara A. Brickley, and Clement A. Finch: Erythrocyte 

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94. Necheles, T. F., Irwin M. Weinstein, and George V. Leroy: Radioactive Sodium 

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95. Hevesy, G.: Nucleic Acid Metabolism, Advances in Biol, and Med. Phys., 1: 

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96. Heidelberger, Charles: The Application of the Carbon Isotopes to a Study of 

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97. Burris, R. H.: Carbon 14 Studies on Organic Acid Metabolism in Plants, in 

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