  The specific heat of hot hadronic matter is related to particle production
yields from experiments done at CERN/RHIC. The mass fluctuation of excited
hadrons plays an important role. Connections of the specific heat, mean
hadronic mass excited and its fluctuation with properties of baryon and
electric chemical potentials (value, slope and curvature) are also developed. A
possible divergence of the specific heat as 1/(To-T)^2 is discussed. Some
connections with net charge fluctuations are noted.
