Dissolve gelatin and sugar in hot water and 1/3 cup hot lemon juice. Chill until consistency of unbeaten egg white. Add lemon rind. Chill Carnation in refrigerator tray until soft ice crystals form around edges of tray (15-20 minutes). Whip until stiff (1 minute). Add 2 tablespoons lemon juice; whip very stiff (2 minutes longer). Fold whipped Carnation into chilled gelatin mixture. Spoon into pie shell. Chill until firm (1 to 2 hours). Makes 9-inch single crust pie.