Preface 1 The Equations of Motion 1.1 Euler's Equations 1.2 R,otation and Vorticity 1.3 The Navier-Stokes Equations 2 Potential Flow and Slightly Viscous Flow 2.1 Potential Flow 2.2 Boundary Layers 2.3 Vortex Sheets 2.4 R;emarks on Stability and Bifurcation 3 Gas Flow in One Dimension 3.1 Characteristics 3.2 Shocks 3.3 The Riemann Problem 3.4 Combustion Waves