Sprinkle gelatin onto 1/2 cup tomatosjuice in saucepan to soften.
Place over low heat until gelatin is dissolved, stirring constantly.
Re move from heat; add remaining tomato juice, salt, sugar, Worcestershire sauce, Tabasco sauce and lemon juice.
Pour into 2 cup mold or individual molds.
Chill until firm; unmold onto platter.
Garnish with avocado slices and salad greens.