  Polycrystalline HoSn1.1Ge0.9 and DySn1.1Ge0.9 compounds have been studied by
means of different experimental probes. Both the compounds are
antiferromagnetic and show metamagnetic transition at low temperatures.
HoSn1.1Ge0.9 shows a sign change in magnetocaloric effect (MCE) and
magnetoresistance (MR) with field, which is attributed to the metamagnetic
transition. DySn1.1Ge0.9 shows characteristics of a typical antiferromagnet, as
evidenced by magnetization, MCE and MR data. 119Sn M\"ossbauer studies show
hyperfine splitting at low temperatures, consistent with magnetization data.
Thermoelectric power and resistivity measurements reveal metallic behavior in
these compounds. Magnetic, magnetocaloric and the magnetoresistance data
clearly show that the antiferromagnetic coupling in DySn1.1Ge0.9 is stronger
than in HoSn1.1Ge0.9.
