FIG. 1 is an upper perspective view of one embodiment of a portable toilet showing my new design;
FIG. 2 is a lower perspective view thereof;
FIG. 3 is a perspective view thereof taken from a different orientation;
FIG. 4 is a top plan view thereof;
FIG. 5 is a front elevational view thereof, the rear elevation view being identical;
FIG. 6 is a left side elevational view, the right side elevational view being identical;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is an upper perspective view of a second embodiment of a portable toilet showing my new design;
FIG. 9 is a lower perspective view thereof;
FIG. 10 is a perspective view thereof taken from a different orientation;
FIG. 11 is a top plan view thereof;
FIG. 12 is a front elevational view thereof, the rear elevation view being identical;
FIG. 13 is a left side elevational view, the right side elevational view being identical; and,
FIG. 14 is a bottom plan view thereof.
The broken lines show portions of the portable toilet that form no part of the claimed design.