FIG. 1 is a front perspective view of a first embodiment of a wall block showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 7 is a sectional view taken along line 7--7 of FIG. 2;

FIG. 8 is a sectional view taken along line 8--8 of FIG. 2;

FIG. 9 is a front perspective view of a second embodiment of the wall block of my new design;

FIG. 10 is a top plan view of FIG. 9;

FIG. 11 is a bottom plan view of FIG. 9;

FIG. 12 is a front elevational view of FIG. 9;

FIG. 13 is a rear elevational view of FIG. 9;

FIG. 14 is a side elevational view of FIG. 9, the opposite side being a mirror image thereof;

FIG. 15 is a sectional view taken along line 15--15 of FIG. 10;

FIG. 16 is a sectional view taken along line 16--16 of FIG. 10;

FIG. 17 is a front perspective view of a third embodiment of the wall block of my new design;

FIG. 18 is a top plan view of FIG. 17;

FIG. 19 is a bottom plan view of FIG. 17;

FIG. 20 is a front elevational view of FIG. 17;

FIG. 21 is a rear elevational view of FIG. 17;

FIG. 22 is a side elevational view of FIG. 17, the opposite side being a mirror image thereof;

FIG. 23 is a sectional view taken along line 23--23 of FIG. 18;

FIG. 24 is a sectional view taken along line 24--24 of FIG. 18;

FIG. 25 is a perspective view of a fourth embodiment of the wall block showing my new design;

FIG. 26 is a top plan view of FIG. 22;

FIG. 27 is a bottom plan view of FIG. 22;

FIG. 28 is a front elevational view of FIG. 22;

FIG. 29 is a rear elevational view of FIG. 22;

FIG. 30 is a side elevational view of FIG. 22, the opposite side being a mirror image thereof;

FIG. 31 is a sectional view taken along line 31--31 of FIG. 26;

FIG. 32 is a sectional view taken along line 32--32 of FIG. 26.