E.I. Solomon, M.D. Lowery, L.B. LaCroix, and D.E. Root, Electronic Absorption Spectroscopy of Copper Proteins.B.A. Averill and J.B. Vincent, Electronic Absorption Spectroscopy of Nonheme Iron Proteins.W. Maretand B.L. Vallee, Cobalt as a Probe and Label of Proteins.L.M. Utschig, J.G. Wright, and T.V. O'Halloran, Biochemical and Spectroscopic Probes of Hg(II) Coordination Environments in Proteins.M.R. Chance, Low Temperature Optical Spectroscopy: Metalloprotein Structure and Dynamics.E. Chen and M.R. Chance, Nanosecond Transient Absorption Spectroscopy.R.A. Goldbeck and D.S. Kliger, Nanosecond Time-Resolved Absorption and Polarization Dichroism Spectroscopies.R.C.Dunn, X. Xie and J.D. Simon, Real-Time Spectroscopic Techniques for Probing Conformational Dynamics of Heme Proteins.A.J. Thompson, M.R. Cheesman, and S.J. George, Variable-Temperature Magnetic Circular Dichroism.A. Rodger, LinearDichroism.K. Nakamoto and R.S. Czernuszewicz, Infrared Spectroscopy.J.A. Larrabee and S. Choi, Fourier Transform Infrared Spectroscopy.T.B. Freedman and L.A. Nafie, Infrared Circular Dichroism.Y. Wang and H.E. Van Wart, Raman and Resonance Raman Spectroscopy.J.C. Austin, K.R. Rogers, and T.G. Spiro, Protein Structure from Ultraviolet Resonance Raman Spectroscopy.G. Smulevich and T.G. Spiro, Single-Crystal Micro-Raman Spectroscopy.C. Varotsis and G.T. Babcock, Nanosecond Time-Resolved Resonance Raman Spectroscopy.T.M. Loehr and J. Sanders-Loehr, Techniques for Obtaining Resonance Raman Spectra of Metalloproteins.L.A. Nafie and T.B. Freedman, Raman Optical Activity.W.E. Smith, Surface-Enhanced Resonance Raman Scattering.W.DeW. Horrocks, Jr., Luminescence Spectroscopy.J.P. Riehl and F.S. Richardson, Circularly Polarized Luminescence.D.S. Auld, Low Temperature Stopped-Flow Rapid-Scanning Spectroscopy: Performace Tests and Use of Aqueous Salt Cryosolvents.N.M. Kostick, Transition-Metal Complexes as Spectroscopic Probes for Selective Covalent Labeling and Cross-Linking of Proteins.C.J. Murphy and J.K. Barton, Ruthenium Complexes as Luminescent Reporters of DNA.W. Maret, Detecting Metal-Metal Interactions and Measuring Distances between Metal Centers in Metalloproteins.Author Index.Subject Index.