The yield of bone is an important aspect of lamb carcass evaluation studies. Hand boning is commonly done to compute this. However, it is often difficult to compare and draw conclusions on carcass bone content obtained by different groups of workers as this value is very sensitive to the extent to which bones are cleaned before weighing (Cuthbertson, 1975). The amount of residue remaining on the bones after hand boning and its effect on the final yield of bone in lamb carcasses has not been adequately investigated so far. Such information is of scientific interest to those involved in lamb carcass evaluation work. Therefore, the present study was planned to probe into this aspect.