Invited lectures on galaxy morphology given at the Les Houches late-summer school ("Galaxy formation and evolution"). (astro-ph/9809131)

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Table of Contents

• INTRODUCTION
• CLASSICAL MORPHOLOGY AND THE HUBBLE SYSTEM
• How should we judge the Hubble system?
• Physical foundations of the Hubble sequence
• Ellipticals
• Age Controversy
• Environmental Effects
• Luminosity and the Fundamental Plane
• S0 Galaxies
• Late-type Galaxies
• Two physical regimes along the tuning fork?
• Bulge formation
• An improved Hubble system?
• MORPHOLOGY AT HIGH REDSHIFTS
• The nature of high-z peculiar galaxies
• The evolving merger rate
• When does a merger become a galaxy?
• Morphologies of Lyman-limit systems considered dangerous
• New classes of galaxies
• REFERENCES