Contents of this symposium include the following papers: "Effect of Maternal Protein Malnutrition on Neonatal Lung Development and Mitochondrial Function," E. J. Hawrylewicz, J. Q. Kissane, W. H. Blair and C. A. Heppner; "Effect of the Level of Nutrition on Rates of Cell Proliferation and of RNA and Protein Syntheses in the Rat," L. M. Roeder; "Protein Deficiency, Reproduction, and Hormonal Factors in Growth," M. R. Turner; "Reproductive Performance of Chronic Mildly Zinc Deficient Rats and the Effect on Behavior of Their Offspring," D. F. Caldwell, D. Oberleas, and A. S. Prasad; "Effects of Growth Hormone and Pituitary Extract on Behavioral Abnormalities in Offspring of Undernourished Rats," M. Simonson, et. al.; "Neonatal Infection, Maternal Malnutrition and Fetal Brain Metabolism," C. J. Lee; "Effect on Rat Offspring of a Maternal Diet Deficient in Calories but not in Protein," A. A. Rider and M. Simonson; "Prenatal Nutritional Factors Affecting Brain Development," S. Zamenhof, et. al.; "Adaptations in the Metabolism of Protein during Pregnancy and Their Nutritional Implications," D. J. Naismith; "The Developing Brain . . .," J. Dobbing; "Pre- and Postnatal Malnutrition and Responses to Infection," P. M. Newberne and B. M. Gebhardt; "Persistent Effects of Maternal Protein Deficiency in Postnatal Rats," F. J. Zeman et. al.; "Perinatal Undernutrition and the Metabolic and and Behavioral Development of the Offspring," A. M. Hsueh et. al.; and others. (JM)