The excess enthalpies H-m(E) of [x{BrCH2Cl or BrCH2CH2Cl or BrCH2CH2CH2Cl or BrCH2(CH2)(2)CH2Cl}+(1 - x){CH3(CH2)(5)CH3 or CH3(CH2)(14)CH3 or c-(CH2)(6)} have been measured at the temperature 298.15 K. Mixing was endothermic at all x and the H(m)(E)s were found to vary in the sequence : BrCH2CH2Cl > BrCH2Cl > BrCH2CH2CH2Cl approximate to BrCH2(CH2)(2)CH2Cl for mixing with CH3(CH2)(5)CH3. This behaviour is similar to that found for mixing with CH3(CH2)(14)CH3 or c-(CH2)(6). From the results, qualitative information could be obtained about the so-called "proximity effect".