I claim, the ornamental design for a lamp, as shown and described.
FIG. 1 is a perspective view of a lamp showing my new design;
FIG. 2 is a side view of the lamp shown in FIG. 1;
FIG. 3 is a side view of the lamp shown in FIG. 1;
FIG. 4 is a front view of the lamp shown in FIG. 1;
FIG. 5 is a back view of the lamp shown in FIG. 1; and,
FIG. 6 is a top view of the lamp shown in FIG. 1.
The broken line showing of a base in the drawings are for the purpose of illustrating unclaimed portions of the lamp and form no part of the claimed design.
The larger tubular areas of the lamp are substantially cylindrical, but become somewhat flattened when in the varying bent positions that are shown in the drawings.