On models, stability, and design.-- Modeling and desing.-- Lumped-parameter systems modeled by ordinary differential equations.-- Steady states of CSTR models.-- Geometry of dynamics.-- Local dynamic stability.-- Regions of stability.-- Distributed-parameter systems modeled by partial differential equations.-- Steady states in distributed systems.-- Local estability of distributed-parameter systems.-- Regions of stability for distributed-parameter systems.-- Effects of recycle.