I Bicarbonate.- 1 Determination of Renal Bicarbonate Reabsorption by Micropuncture.- II Diuretics.- 2 The Use of the Isolated Tubule Preparation for the Investigation of Diuretics.- 3 Study of Renal Action of Diuretics by Micropuncture Techniques.- 4 The Use of Clearance Methods for the Determination of Sites of Action of Diuretics in the Kidney.- 5 Effects of Diuretics on Renal Transport of Potassium.- III Metabolism.- 6 The Effect of Diuretics on Kidney Intermediary Metabolism.- 7 Renal ATPase as a Receptor for Drugs Acting on the Kidney.- 8 Interactions between Vitamin D and the Kidney.- 9 Drugs Affecting the Renal Handling of Uric Acid.- 10 Drugs and Other Agents Affecting the Renal Adenylate Cyclase System.- IV Organic Acid.- 11 Proximal Tubular Transport and Renal Metabolism of Organic Cations and Catechol.- 12 The Renal Excretion of Drugs.