The preliminary results of the chemical analysis of a sample of 22 galactic R-stars with measured parallaxes are presented. We have derived the C/O and 12C/13C ratios, the average metallicity ([M/H]) and the Li abundances. We find that most of the stars have 12C/13C below ˜ 20 with no significant difference between cool and hot R-stars. The C/O ratio ranges between ˜ 1 to 2. We obtain a clear separation in the Li abundance between hot and cool R stars, with a mean value of log epsilon (Li) = +0.90 and log epsilon (Li) =-0.50, respectively. Cool stars are of near solar metallicity whereas hot stars show a larger spread, -0.5< [Fe/H] < +0.1. Concerning the possibility of s-element enhancements, we obtain [Rb/M] > 0 in seven hot stars and in three of them (R-hot) the analysis of the 5924 {Å} TcI line might be compatible with Tc detection. However, the detection of other s-element enhancements is necessary to elucidate the evolutionary stage of these carbon stars of which origin is still unknown.