  We report the evidence of proton incorporations in a newly-discovered cobalt
oxyhydrate superconductor. During the hydration process for
Na$_{0.32}$CoO$_{2}$ by the direct reaction with water liquid, it was shown
that substantial NaOH was gradually liberated, indicating that H$^{+}$ is
incorporated into the hydrated compound. Combined with the thermogravimetric
analysis, the chemical composition of the typical sample is
Na$_{0.22}$H$_{0.1}$CoO$_{2}\cdot 0.85$H$_{2}$O, which shows bulk
superconductivity at 4.4 K.
