Four experiments are reported which examined the phenomenon of virtual pitch of missing fundamentals for complex tones with many harmonics. In particular the question is raised whether virtual pitch is mediated only by low-order harmonics, resolved in the cochlea, or can be conveyed as well by high-order harmonics which the cochlea cannot resolve. For a review of virtual pitch phenomena and asso~iated theories, see De Boer (1976), Moore (1982) or Scharf and Houtsma (1986).