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, showing
material draped around the edge, and the lower part in the closed
position;
FIG. 2 is a top plan view of the casket in closed position;
FIG. 3 is a side elevational view, the appearance being the same on both
sides; and,
FIG. 4 is an end elevational view, the appearance being the same on both
ends.