We claim the ornamental design for a jar, as shown and described.
FIG. 1 is a top perspective view of a jar showing our new design
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a cross-section view thereof taken along the line 4-4 in FIG. 3;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front elevation view thereof; and,
FIG. 7 is a rear elevation view thereof.
The evenly-dashed broken lines showing the closure in FIGS. 1 & 2 illustrate the portions of the jar that form no part of the claim. The dot-dash broken line in FIG. 3 is to indicate where the FIG. 4 cross-section view has been taken and forms no part thereof.