I: Momentum transport -- Viscosity and the mechanism of momentum transport -- Velocity distributions in Laminar flow -- The equations of change for isothermal systems -- Velocity distributions with more than one independent variable -- Velocity distributions in turbulent flow -- Interphase transport in isothermal systems -- Macroscopic balances for isothermal systems -- II: Energy transport -- Thermal conductivity and the mechanism of energy transport -- Temperature distributions in solids and in laminar flow -- The equations of change for nonisothermal systems -- Temperature distributions with more than one independent variable -- Temperature distributions in turbulent flow -- Interphase transport in nonisothermal systems -- Energy transport by radiation -- Macroscopic balances for nonisothermal systems -- III: Mass transport -- Diffusivity and the mechanisms of mass transport -- Concentration distributions in solids and in laminar flow -- The equations of change for multicomponent systems -- Concentration distributions with more than one independent variable -- Concentration distributions in turbulent flow -- Interphase transport in multicomponent systems -- Macroscopic balances for multicomponent systems.