  The chemical compositions of 26 metal-poor stars that exhibit strong CH
and/or C2 molecular bands are determined based on high-resolution spectroscopy.
We define carbon-enhanced stars taking account of the carbon abundance ratio
([C/Fe]) and the evolutionary status. Twenty two stars in our sample satisfy
our modified definition for Carbon-Enhanced Metal-Poor (CEMP) stars. In
addition, we measure Na abundances for nine other carbon-enhanced stars for
which abundances of other elements have been previously reported. Combining our
new sample with the results of previous work, we investigate the abundance and
evolutionary status of a total of 64 CEMP stars. In this paper, we separate the
carbon-enhanced objects into Ba-rich and Ba-normal objects, and discuss on (1)
the metallicity distributions, (2) the correlation between Ba and C (and C+N)
abundances, (3) C abundance distributions, (3) the distributions of
evolutionary status, and (5) Na abundances. The implications of these results
on the origins of carbon in CEMP stars are discussed.
