The ornamental design for burial casket, as shown and described.
FIG. 1 is a perspective view of a burial casket showing my new design, with
the upper part of the two-part cover in the open position and the lower
part in the closed position;
FIG. 2 is a side elevational view of the casket in the closed position, the
appearance being the same on both sides;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is an end elevational view, the appearance being the same on both
ends.