  High-resolution spectroscopic observations of a hundred metal-poor Carbon and
s-rich stars (CEMP-s) collected from the literature are compared with the
theoretical nucleosynthesis models of asymptotic giant branch (AGB) presented
in Paper I (M = 1.3, 1.4, 1.5, 2 Msun, -3.6 < [Fe/H] < -1.5). The s-process
enhancement detected in these objects is associated to binary systems: the more
massive companion evolved faster through the thermally pulsing AGB phase
(TP-AGB), synthesising in the inner He-intershell the s-elements, which are
partly dredged-up to the surface during the third dredge-up (TDU) episode. The
secondary observed low mass companion became CEMP-s by mass transfer of C and
s-rich material from the primary AGB.
  We analyse the light elements as C, N, O, Na and Mg, as well as the two
s-process indicators, [hs/ls] (where ls = <Y, Zr> is the the light-s peak at N
= 50 and hs = <La, Nd, Sm> the heavy-s peak at N = 82), and [Pb/hs]. We
distinguish between CEMP-s with high s-process enhancement, [hs/Fe] > 1.5
(CEMP-sII), and mild s-process enhanced stars, [hs/Fe] < 1.5 (CEMP-sI). To
interpret the observations, .... .
  Detailed analyses for individual stars will be provided in Paper III.
